377 Part 74—Listing of Color Ad- Ditives Subject to Certifi

Total Page:16

File Type:pdf, Size:1020Kb

377 Part 74—Listing of Color Ad- Ditives Subject to Certifi Food and Drug Administration, HHS Pt. 74 (acetylamino)-4-hydroxy-3-((4-((2- requirements of section 721(c) of the (sulfooxy)ethyl)sulfonyl)phenyl)azo)-] act. (CAS Reg. No. 68189±39±9). [58 FR 3227, Jan. 8, 1993, as amended at 58 FR (4) C.I. Reactive Yellow 15 17510, Apr. 5, 1993] [benzenesulfonic acid, 4-(4,5-dihydro-4- ((2-methoxy-5-methyl-4-((2- PART 74ÐLISTING OF COLOR AD- (sulfooxy)ethyl)sulfonyl)phenyl)azo)-3- DITIVES SUBJECT TO CERTIFI- methyl-5-oxo-1H-pyrazol-1-yl)-] (CAS CATION Reg. No. 60958±41±0). (5) C.I. Reactive Blue No. 19 [2- Subpart AÐFoods anthracenesulfonic acid, 1-amino-9,10- dihydro-9,10-dioxo-4-((3-((2- Sec. (sulfooxy)ethyl)sulfonyl)phenyl)amino) 74.101 FD&C Blue No. 1. -, disodium salt] (CAS Reg. No. 2580±78± 74.102 FD&C Blue No. 2. 74.203 FD&C Green No. 3. 1). 74.250 Orange B. (6) C.I. Reactive Blue 21 [copper, 74.302 Citrus Red No. 2. (29H,31H-phthalocyaninato(2-)-N29, N30, 74.303 FD&C Red No. 3. N31, N32)-, sulfo((4-((2-(sulfooxy) 74.340 FD&C Red No. 40. ethyl)sulfonyl)phenyl)amino)sulfonyl 74.705 FD&C Yellow No. 5. derivatives] (CAS Reg. No. 73049±92±0). 74.706 FD&C Yellow No. 6. (b) Uses and restrictions. (1) The sub- Subpart BÐDrugs stances listed in paragraph (a) of this section may be used to color contact 74.1101 FD&C Blue No. 1. lenses in amounts not to exceed the 74.1102 FD&C Blue No. 2. 74.1104 D&C Blue No. 4. minimum reasonably required to ac- 74.1109 D&C Blue No. 9. complish the intended coloring effect. 74.1203 FD&C Green No. 3. (2) As part of the manufacturing 74.1205 D&C Green No. 5. process, the lenses containing the color 74.1206 D&C Green No. 6. additives are thoroughly washed to re- 74.1208 D&C Green No. 8. move unbound reactive dye. 74.1254 D&C Orange No. 4. 74.1255 D&C Orange No. 5. (3) Authorization and compliance 74.1260 D&C Orange No. 10. with this use shall not be construed as 74.1261 D&C Orange No. 11. waiving any of the requirements of sec- 74.1303 FD&C Red No. 3. tions 510(k), 515, and 520(g) of the Fed- 74.1304 FD&C Red No. 4. eral Food, Drug, and Cosmetic Act (the 74.1306 D&C Red No. 6. act). A person intending to introduce a 74.1307 D&C Red No. 7. 74.1317 D&C Red No. 17. device containing a vinyl alcohol/meth- 74.1321 D&C Red No. 21. yl methacrylate-dye reaction product 74.1322 D&C Red No. 22. listed under this section into com- 74.1327 D&C Red No. 27. merce shall submit to the Food and 74.1328 D&C Red No. 28. Drug Administration either a pre- 74.1330 D&C Red No. 30. market notification in accordance with 74.1331 D&C Red No. 31. subpart E of part 807 of this chapter, if 74.1333 D&C Red No. 33. 74.1334 D&C Red No. 34. the device is not subject to premarket 74.1336 D&C Red No. 36. approval, or submit and receive ap- 74.1339 D&C Red No. 39. proval of an original or supplemental 74.1340 FD&C Red No. 40. premarket approval application if the 74.1602 D&C Violet No. 2. device is subject to premarket ap- 74.1705 FD&C Yellow No. 5. proval. 74.1706 FD&C Yellow No. 6. 74.1707 D&C Yellow No. 7. (c) Labeling. The label of the color ad- 74.1707a Ext. D&C Yellow No. 7. ditive shall conform to the require- 74.1708 D&C Yellow No. 8. ments of § 70.25 of this chapter. 74.1710 D&C Yellow No. 10. (d) Exemption from certification. Cer- 74.1711 D&C Yellow No. 11. tification of this color additive is not necessary for the protection of the pub- Subpart CÐCosmetics lic health, and therefore, this color ad- 74.2101 FD&C Blue No. 1. ditive is exempt from the certification 74.2104 D&C Blue No. 4. 377 VerDate 06<MAY>99 17:33 Jun 02, 1999 Jkt 183062 PO 00000 Frm 00373 Fmt 8010 Sfmt 8010 Y:\SGML\183062T.XXX pfrm04 PsN: 183062T § 74.101 21 CFR Ch. I (4±1±99 Edition) 74.2151 D&C Brown No. 1. sulfobenzyl) ammonium hydroxide 74.2203 FD&C Green No. 3. inner salt and ethyl [4-[p-[ethyl (o- 74.2205 D&C Green No. 5. α 74.2206 D&C Green No. 6. sulfobenzyl) amino] - - (o 74.2208 D&C Green No. 8. -sulfophenyl) benzylidene]-2,5- 74.2254 D&C Orange No. 4. cyclohexadien-1-ylidene] (o- 74.2255 D&C Orange No. 5. sulfobenzyl) ammonium hydroxide 74.2260 D&C Orange No. 10. inner salt. 74.2261 D&C Orange No. 11. 74.2304 FD&C Red No. 4. (2) Color additive mixtures for food 74.2306 D&C Red No. 6. use (including dietary supplements) 74.2307 D&C Red No. 7. made with FD&C Blue No. 1 may con- 74.2317 D&C Red No. 17. tain only those diluents that are suit- 74.2321 D&C Red No. 21. able and that are listed in part 73 of 74.2322 D&C Red No. 22. 74.2327 D&C Red No. 27. this chapter as safe for use in color ad- 74.2328 D&C Red No. 28. ditive mixtures for coloring foods. 74.2330 D&C Red No. 30. (b) Specifications. FD&C Blue No. 1 74.2331 D&C Red No. 31. shall conform to the following speci- 74.2333 D&C Red No. 33. fications and shall be free from impuri- 74.2334 D&C Red No. 34. 74.2336 D&C Red No. 36. ties other than those named to the ex- 74.2340 FD&C Red No. 40. tent that such other impurities may be 74.2602 D&C Violet No. 2. avoided by current good manufacturing 74.2602a Ext. D&C Violet No. 2. practice: 74.2705 FD&C Yellow No. 5. 74.2706 FD&C Yellow No. 6. Sum of volatile matter (at 135 ° C) and 74.2707 D&C Yellow No. 7. chlorides and sulfates (calculated as so- 74.2707a Ext. D&C Yellow No. 7. dium salts), not more than 15.0 percent. 74.2708 D&C Yellow No. 8. Water-insoluble matter, not more than 0.2 74.2710 D&C Yellow No. 10. percent. 74.2711 D&C Yellow No. 11. Leuco base, not more than 5 percent. Subpart D±Medical Devices Sum of o-, m-, and p-sulfobenzaldehydes, not more than 1.5 percent. 74.3045 [Phthalocyaninato(2-)] copper. N-Ethyl,N-(m-sulfobenzyl)sulfanilic acid, not 74.3106 D&C Blue No. 6. more than 0.3 percent. 74.3206 D&C Green No. 6. Subsidiary colors, not more than 6.0 percent. 74.3230 D&C Red No. 17. Chromium (as Cr), not more than 50 parts 74.3602 D&C Violet No. 2. per million. 74.3710 D&C Yellow No. 10. Manganese (as Mn), not more than 100 parts APPENDIX A TO PART 74ÐTHE PROCEDURE FOR per million. DETERMINING ETHER SOLUBLE MATERIAL Arsenic (as As), not more than 3 parts per IN D&C RED NOS. 6 AND 7 million. AUTHORITY: 21 U.S.C. 321, 341, 342, 343, 348, Lead (as Pb), not more than 10 parts per mil- 351, 352, 355, 361, 362, 371, 379e. lion. SOURCE: 42 FR 15654, Mar. 22, 1977, unless Total color, not less than 85.0 percent. otherwise noted. (c) Uses and restrictions. FD&C Blue No. 1 may be safely used for coloring Subpart AÐFoods foods (including dietary supplements) § 74.101 FD&C Blue No. 1. generally in amounts consistent with good manufacturing practice except (a) Identity. (1) The color additive that it may not be used to color foods FD&C Blue No. 1 is principally the di- sodium salt of ethyl [4-[p-[ethyl (m- for which standards of identity have sulfobenzyl) amino]-α-(o-sulfophenyl) been promulgated under section 401 of benzylidene] - 2,5 -cyclohexadien - 1 - the act unless added color is authorized ylidene] (m-sulfobenzyl) ammonium hy- by such standards. droxide inner salt with smaller (d) Labeling. The label of the color ad- amounts of the isomeric disodium salts ditive and any mixtures prepared of ethyl [4-[p-[ethyl(p-sulfobenzyl) therefrom intended solely or in part for amino]-α-(o-sulfophenyl) benzylidene]- coloring purposes shall conform to the 2,5-cyclohexadien-1-ylidene] (p- requirements of § 70.25 of this chapter. 378 VerDate 06<MAY>99 17:33 Jun 02, 1999 Jkt 183062 PO 00000 Frm 00374 Fmt 8010 Sfmt 8010 Y:\SGML\183062T.XXX pfrm04 PsN: 183062T Food and Drug Administration, HHS § 74.203 (e) Certification. All batches of FD&C Disodium salt of 2-(1,3-dihydro-3-oxo-7-sulfo- Blue No. 1 shall be certified in accord- 2H-indol-2-ylidene)-2,3-dihydro-3-oxo-1H- ance with regulations in part 80 of this indole-5-sulfonic acid, not more than 18 percent. chapter. Sodium salt of 2-(1,3-dihydro-3-oxo-2H-indol- [42 FR 15654, Mar. 22, 1977, as amended at 58 2-ylidene)-2,3-dihydro-3-oxo-1H-indole-5- FR 17511, Apr.
Recommended publications
  • 145 Aromatic Amines: Use in Azo Dye Chemistry Harold S. Freema
    [Frontiers in Bioscience, Landmark, 18, 145-164, January 1, 2013] Aromatic amines: use in azo dye chemistry Harold S. Freeman North Carolina State University, Raleigh, North Carolina 27695-8301, USA TABLE OF CONTENTS 1. Abstract 2. Introduction 2.1. Structural nature 2.2. Formation 3. Properties 3.1. Chemical 3.2. Azo dye formation 3.3. Genotoxicity 4. Influence on dye properties 4.1. Color 4.2. Coloration (dye-polymer affinity) 4.3. Technical properties 4.3.1. Wet fastness 4.3.2. Light fastness 4.3.3. Ozone fastness 5. Summary 6. Acknowledgement 7. References 1. ABSTRACT This chapter provides an overview of the Aromatic amines used in azo dye formation are chemical structures and properties of aromatic amines and 4n plus 2 pi-electron systems in which a primary (–NH2), their role in the development and utility of azo dyes. secondary (–NHR), or tertiary (–NR2) amino group is Approaches to the design of environmentally benign attached to a carbocyclic or heterocyclic ring. Their alternatives to genotoxic primary aromatic amines, as azo structures are manifold and include amino-substituted dye precursors, are included. benzenes, naphthalenes, and heterocycles such as those shown in Figure 2 and Figure 3. As the representative 2. INTRODUCTION structures suggest, aromatic amines can be hydrophobic or hydrophilic, simple or complex, and vary widely in 2.1. Structural nature electronic (donor/acceptor) properties. In the sections that Azo dyes comprise about two-thirds of all follow, it will be shown that their structural nature synthetic dyes, making them by far the most widely used determines the types of substrates that have affinity for the and structurally diverse class of organic dyes in commerce resultant azo dyes and the technical properties of the (1).
    [Show full text]
  • United States Patent [191 [1 1] 4,163,675 Hirano Et Al
    United States Patent [191 [1 1] 4,163,675 Hirano et al. ' [45] Aug. 7, 1979 [54] AQUEOUS INK COMPOSITION FOR [56] References Cited WRITING INSTRUMENTS U.S. PATENT DOCUMENTS [75] Inventors: Katsumi I-Iirano, Kuwana; Takeshi Re. 28,605 11/1975’ Alburger .............................. .. 106/19 Teranishi, Nagoya; Kunio Kosaki, 3,519,443 7/1970 Kaplan et al. ....................... .. 106/22 Nagoya; Kazuhiko Honda, Nagoya, Primary Examiner-Carman J. Seccuro all of Japan Attorney, Agent, or Firm-Sughrue, Rothwell, Mion, [73] Assignee: Pilot Ink Co., Ltd., Nagoya, Japan Zinn and Macpeak [57] ABSTRACT [21] Appl. No.: 921,151 An aqueous ink composition, suitable for use in writing [22] Filed: Jun. 30, 1978 instruments including an ink passage made of a plastic material, consisting essentially of water, a water-soluble [30] Foreign Application Priority Data dye and a naphthalene derivative as essential ingredi ents and a glycol or a polyglycol as a moisture-retaining Jun, 30. 1977 [JP] Japan ................................ .. 52-78188 agent, a very small amount of a surface active agent as [51] Int. Cl.2 .................... .. C09D 11/16; C09D 11/18 a penetrant, an anti-mold agent and other additives as [52] US. Cl. ......................... ., ........... .. 106/22; 106/25; optional ingredients. The naphthalene derivative im 260/29.6 B; 260/29.6 EN parts affinity for the plastic material. [58] Field of Search ............. .. 106/22, 25; 260/29.6 B, 260/29.6 I-IN 8 Claims, No Drawings 4,163,675 l 2 AQUEOUS INK COMPOSITION FOR WRITING ' SUMMARY OF THE INVENTION INSTRUMENTS An object of the present invention is to provide an aqueous ink composition suitable for writing instru BACKGROUND OF THE INVENTION 5 ments including an ink passage made of a plastic mate 1.
    [Show full text]
  • SECTION-VI 238 CHAPTER-29 Organic Chemicals 1. Except Where
    SECTION-VI 238 CHAPTER-29 CHAPTER 29 Organic chemicals NOTES : 1. Except where the context otherwise requires, the headings of this Chapter apply only to : (a) separate chemically defined organic compounds, whether or not containing impurities; (b) mixtures of two or more isomers of the same organic compound (whether or not containing impurities), except mixtures of acyclic hydrocarbon isomers (other than stereoisomers), whether or not saturated (Chapter 27); (c) the products of headings 2936 to 2939 or the sugar ethers, sugar acetals and sugar esters, and their salts, of heading 2940, or the products of heading 2941, whether or not chemically defined; (d) the products mentioned in (a), (b) or (c) above dissolved in water; (e) the products mentioned in (a), (b) or (c) above dissolved in other solvents provided that the solution constitutes a normal and necessary method of putting up these products adopted solely for reasons of safety or for transport and that the solvent does not render the product particularly suitable for specific use rather than for general use; (f) the products mentioned in (a), (b), (c), (d) or (e) above with an added stabiliser (including an anti-caking agent) necessary for their preservation or transport; (g) the products mentioned in (a), (b), (c), (d), (e) or (f) above with an added anti-dusting agent or a colouring or odoriferous substance added to facilitate their identification or for safety reasons, provided that the additions do not render the product particularly suitable for specific use rather than for general use; (h) the following products, diluted to standard strengths, for the production of azo dye: diazonium salts, couplers used for these salts and diazotisable amines and their salts.
    [Show full text]
  • Staging Category Base Rate Article Description HTS Heading
    HTS Heading/Article Subheading description Base Rate Staging Category I. CHEMICAL ELEMENTS 2801 Fluorine, chlorine, bromine and iodine: 28011000 -Chlorine Free E 28012000 -Iodine Free E 280130 -Fluorine; bromine: 28013010 --Fluorine 3.7% A 28013020 --Bromine 5.5% A 28020000 Sulfur, sublimed or precipitated; colloidal sulfur Free E Carbon (carbon blacks and other forms of carbon not 28030000 elsewhere specified or included) Free E 2804 Hydrogen, rare gases and other nonmetals: 28041000 -Hydrogen 3.7% A -Rare gases: 28042100 --Argon 3.7% A 28042900 --Other 3.7% A 28043000 -Nitrogen 3.7% A 28044000 -Oxygen 3.7% A 28045000 -Boron; tellurium Free E -Silicon: --Containing by weight not less than 99.99 percent of 28046100 silicon Free E 280469 --Other: ---Containing by weight less than 99.99 percent but not 28046910 less than 99 percent of silicon 5.3% B 28046950 ---Other 5.5% B 28047000 -Phosphorus Free E 28048000 -Arsenic Free E 28049000 -Selenium Free E Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or 2805 interalloyed; mercury: -Alkali metals: 28051100 --Sodium 5.3% B 28051900 --Other 5.5% B -Alkaline-earth metals: 28052100 --Calcium 3% A 280522 --Strontium and barium: 28052210 ---Strontium 3.7% A 28052220 ---Barium Free E -Rare-earth metals, scandium and yttrium, whether or 28053000 not intermixed or interalloyed 5% A 28054000 -Mercury 1.7% A II. INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NONMETALS Hydrogen chloride (Hydrochloric acid); chlorosulfuric 2806 acid: 28061000 -Hydrogen
    [Show full text]
  • Important Early Synthetic Dyes
    IMPORTANT EARLY SYNTHETIC DYES Chemistry Constitution Date Properties Compiled by Textile Conservation Interns Andrea Bowes Stephen Collins Shannon Elliott La Tasha Harris Laura Hazl ett Ester M~ th~ Muhammadin Razak Pugi Yosep Subagiyo Edited by Mary W. Ballard, Senior Textile Conservator Conservation Analytical Laboratory Smithsonian Institution 1991 Preface This notebook presents information on a limited number of important early synthetic dyes as recommended by the extensive work of Dr. Helmut Schweppe in the field of dye analysis. A great deal of the data has been abstracted from the well-known encyclopedia on dye structure and properties, the Colour Index, published jointly by the American Association of textile Chemists and Colorists and the Society of Dyers and Colourists. The purpose of this manual is as an aid to textile conservators in their laboratories. It is distributed by the Conservation Analytical Laboratory, Smithsonian Institution, with the kind permission of the American Association of Textile Chemists and Colorists. For a complete review of all known dye structures and chemical properties of dyes, the reader is referred to the master volumes of the Colour Index. Mary W. Ballard, editor Senior Textile Conservator, CAL Senior Member, AATCC October, 1991 TABLE OF CONTENTS I). Listing of Early Synthetic Dyes (by Colour Index Number) (in chronological order by color) II). Glossary of Terms III). Chemistry, Constitution, Date, and Properties Bibliography IV). Toxicity Information a). General Health Hazard Protective Equipment b). Accidental Contact Occurrence General Procedures c). Toxicity Manufacturers Listing d). Toxicity Bibliography V). Chemistry, Constitution, Date and Properties Dye Information Section (Arrange by Colour Index Number) Commercial Name: Colour Index Discoverer, year: Generic Name: C.I.Number: 1) Picric Acid Acid Dye 10305 (Woulfe,l771) 2) Martius Yellow C.I.Acid Yello..
    [Show full text]
  • Harmonized Tariff Schedule of the United States (2010) (Rev
    Harmonized Tariff Schedule of the United States (2010) (Rev. 1) Annotated for Statistical Reporting Purposes CHAPTER 29 ORGANIC CHEMICALS VI 29-1 Notes 1. Except where the context otherwise requires, the headings of this chapter apply only to: (a) Separate chemically defined organic compounds, whether or not containing impurities; (b) Mixtures of two or more isomers of the same organic compound (whether or not containing impurities), except mixtures of acyclic hydrocarbon isomers (other than stereoisomers), whether or not saturated (chapter 27); (c) The products of headings 2936 to 2939 or the sugar ethers, sugar acetals and sugar esters, and their salts, of heading 2940, or the products of heading 2941, whether or not chemically defined; (d) Products mentioned in (a), (b) or (c) above dissolved in water; (e) Products mentioned in (a), (b) or (c) above dissolved in other solvents provided that the solution constitutes a normal and necessary method of putting up these products adopted solely for reasons of safety or for transport and that the solvent does not render the product particularly suitable for specific use rather than for general use; (f) The products mentioned in (a), (b), (c), (d) or (e) above with an added stabilizer (including an anticaking agent) necessary for their preservation or transport; (g) The products mentioned in (a), (b), (c), (d), (e) or (f) above with an added antidusting agent or a coloring or odoriferous substance added to facilitate their identification or for safety reasons, provided that the additions do not render the product particularly suitable for specific use rather than for general use; (h) The following products, diluted to standard strengths, for the production of azo dyes: diazonium salts, couplers used for these salts and diazotizable amines and their salts.
    [Show full text]
  • CHAPTER 29 ORGANIC CHEMICALS VI 29-1 Notes 1
    )&f1y3X CHAPTER 29 ORGANIC CHEMICALS VI 29-1 Notes 1. Except where the context otherwise requires, the headings of this chapter apply only to: (a) Separate chemically defined organic compounds, whether or not containing impurities; (b) Mixtures of two or more isomers of the same organic compound (whether or not containing impurities), except mixtures of acyclic hydrocarbon isomers (other than stereoisomers), whether or not saturated (chapter 27); (c) The products of headings 2936 to 2939 or the sugar ethers and sugar esters, and their salts, of heading 2940, or the products of heading 2941, whether or not chemically defined; (d) Products mentioned in (a), (b) or (c) above dissolved in water; (e) Products mentioned in (a), (b) or (c) above dissolved in other solvents provided that the solution constitutes a normal and necessary method of putting up these products adopted solely for reasons of safety or for transport and that the solvent does not render the product particularly suitable for specific use rather than for general use; (f) The products mentioned in (a), (b), (c), (d) or (e) above with an added stabilizer (including an anticaking agent) necessary for their preservation or transport; (g) The products mentioned in (a), (b), (c), (d), (e) or (f) above with an added antidusting agent or a coloring or odoriferous substance added to facilitate their identification or for safety reasons, provided that the additions do not render the product particularly suitable for specific use rather than for general use; (h) The following products, diluted to standard strengths, for the production of azo dyes: diazonium salts, couplers used for these salts and diazotizable amines and their salts.
    [Show full text]
  • Green References01 2018.Pdf
    Toyota Boshoku Controled Substances List Updated: 2018/3/7 ※If you need to know exemption from banning of the use, please check "List of Exemption" sheet Japanese Environment regulation Japanese Safety regulation method of PRTR method of method of Poisonous and (specially 100 kind of VOC Deleterious TB Controled TB Banned PRTR PRTR Industrial Safety Ordinance on Prevention CAS№ Substance Name substances which Ordinance on Substances Substances Substances designated (Class (Class and Health Act. of Dangers due to Heavy New addition need to be notified Prevention of Management Substances subject Specified Chemical Carcinogen note for Class 1) 1) 2) by Japanese Organic Solvent Law. metals [Year/Month] to "GHS Substances. Japanese Environment Poisoning. Poisonous Japanese PRTR Japanese PRTR labeling"and"SDS Specified Chemical PRTR law Ministry Organic solvent Substances/Dele law law reception" Substances [specified chemical [Class 1] [Class 2] terious substances of Substances Category A ] specially 50-00-0 Formaldehyde ○ - 411 411 - 99 548 designated for - - ○ - Class 2 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-ethyl-5- 50-06-6 ○ - - - - - - - - - - ○ - phenyl- Azirino[2',3':3,4]pyrrolo[1,2-a]indole-4,7-dione, 6- amino-8-[[(aminocarbonyl)oxy]methyl]- 50-07-7 ○ - - - - - - - - - - ○ - 1,1a,2,8,8a,8b-hexahydro-8a-methoxy-5-methyl-, [1aS-(1aa,8b,8aa,8ba)]- 50-18-0 Cyclophosphamide ○ - - - - - - - - - - ○ - 50-28-2 estradiol ○ - - - - - - - - - - - - Benzene, 1,1'-(2,2,2-trichloroethylidene)bis[4- 50-29-3 ○ ○ - - - - 388 - - - - - - chloro- 50-32-8
    [Show full text]
  • United States Patent Office
    Patented Apr. 17, 1945 2,374,063 UNITED STATES PATENT OFFICE PURIFICATION of Azo DYESTUFFs William W. Williams, Woodstown, N.J., assignor to E. I. du Pont de Nemours & Company, Will mington, Del, a corporation of Delaware No Drawing. Application May 28, 1942, Serial No. 444,885 7 Claims. (CI. 260-208) This invention relates to the manufacture of mine, carboxyl and sulfonic, and n is 1 to 3. ..I black colors of superior characteristics, a par prefer coupling components of the formulae: ticular element of Superiority residing in this that they are substantially free of the red tone, which N is caused by the compound alk. aniline - -acid -(R) which is formed during the reactions which pro duce the black color, and which heretofore could not be removed by any economical process. 10 The colors of the type which are described here in have four components which are azo coupled, but in general they have an underlying tone of red which detracts from their usefulness. It is an object of this invention to prepare such dye 5 stuffs substantially free from underlying red tOneS. The objects of the invention are accomplished, generally speaking, by preparing these colors and similar colors by a process which involves a step 20 which is generally called acid finishing, the more precise nature of which is more fully set forth hereinafter. The dyestuffs to which this invention relates have the Same general formula in which benzidine 25 YYX-cy, and an amino-naphthol disulfonic acid are the interior components and a diazotized arylamine it and an azo dyestuff coupling component are the in which R1 is from a group consisting of hydro exterior components.
    [Show full text]
  • Unlteosrates PATENT OFFICE'
    Patented Nov. 9, 1948 2,453,420 ‘ uNlTEosrATEs PATENT OFFICE‘ MORPHOLINE SALTS 0F SULFONATED AZO DYE‘ COMPONENTS AND THEIR. PREPARA-l HaroldlGfGreig, ‘Princeton, N. J., assignor to , ‘ Radio Corporation of America, a‘corporation‘ ‘ of Delaware . No Drawing. Application December 21, 1944, 3 Serial No. 569,264 , I 14 Claims. (01.260-247) . 1‘ “ 2 a . ‘The present invention relates to _morpholine ‘dye components, while they provide the desired salts of the sulfo acids‘ of cyclic organic com water solubility, have a number of disadvantages.‘ pounds having a sulfonic acid group linked to a Thus the sodium salts have a tendency when dried ring carbon atom thereof and tea process of ‘pro to darken, ‘ a phenomenon which ‘is particularly ducing the same. i “ “ ' ' “ ‘ " noticeable Where the component contains a ‘plu It is known that azo dyestuffs are‘prepared by; rality ‘of sulfonic acid groups. ‘ Suchdarkening . diazotizing an aromatic amine‘ and coupling the ‘ is apt to b‘e‘reflected in the ?nal color of the dye» resulting diazonium compound‘ with‘ an ‘azo cou stuff and may result in a distortion, of the shade. pling componentx‘The diazotizable amines em - of the dye. ployed are primary aromatic amines of the ben ‘(in the other hand, if it be desiredrto avoid the zene, naphthalene, anthracene and the like series. darkening, particularly whenutilizing the poly, The azo coupling componentaon the other hand, sulfonic‘ acids, by only partially neutralizing the.» are usually phenols or’compounds having a re component, if the component be employed in a active methylene group ‘such as pyrazjolones, ‘ ‘ dry composition, the acidity imparted to the com acetoacetic acid arylides and‘t‘he like, ‘ V‘ ‘ " ‘position may have a deleterious effect thereon.
    [Show full text]
  • The Oxidation of Azo Dyes and Its Relation to Light Fading
    THE OXIDATION OF AZO DYES AND ITS RELATION TO LIGHT FADING. A THESIS Submitted By N. P. DESAI to the UNIVERSITY OF GLASGOW for the degree of DOCTOR OP PHILOSOPHY. April, 1950. ProQuest Number: 13838379 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a com plete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. uest ProQuest 13838379 Published by ProQuest LLC(2019). Copyright of the Dissertation is held by the Author. All rights reserved. This work is protected against unauthorized copying under Title 17, United States C ode Microform Edition © ProQuest LLC. ProQuest LLC. 789 East Eisenhower Parkway P.O. Box 1346 Ann Arbor, Ml 48106- 1346 ACKNOWLEDGMENTS. The author takes this opportunity to thank Professor W*M. cumming, 0. B. E., P. R. S. E., and Dr. C.H. Giles, Senior Lecturer in Technical chemistry, for their able and inspiring guidance throughout the research. He also thanks Professor P. D. pitchie (successor to Professor cumming) for the interest he has shown in the latter part of the work. Thanks are also due to Messrs. James Anderson & Co. (Colours) Ltd., J. & P. Coats Ltd., and Imperial Chemical Industries Ltd. (Dyestuffs Division) for carrying out some light exposure tests, and to the last-named firm for gifts of intermediates; to Mr. H. V. Mehta for supplying anodised aluminium and to Messrs. a*B.
    [Show full text]
  • United States Patent Office
    Patented June 10, 1947 2,422,089 UNITED STATES PATENT OFFICE MANUFACTURE OF CHLORINATED QUINONES Harry H. Fletcher, Nutley, N. J., assignor to United States Rubber Company, New York, N. Y., a corporation of New Jersey No Drawing. Application July 13, 1944, Serial No. 544,821. 5. Clains. (Cl. 260-396) 1. 2 This invention relates to the production of went comprises, sulfuric and acetic acids the con chlorinated quinones from amino-substituted centration of the acetic acid is between 45 and benzenes and Inaphthalenes. 75%, the remainder being sulfuric acid of 96% An object of the invention is to provide in concentration. A preferred mixture consists of proved processes of converting primary and sec about equal parts of sulfuric acid (96%) and Ondary amino-derivatives of benzene, and pri acetic acid (glacial). If desired, the mixture may mary and secondary. alpha-amino-derivatives of be diluted with an equal weight of water. Sub naphthalene, directly, to chlorinated quinones by stantial yields are also obtainable When the cont the action of elemental chlorine, with economy centration of acetic acid is as low as 25%. of materials and/or increased yields of the final 0. In dealing With a reaction Solvent of aqueous products, especially chloranil (from the amino Sulfuric acid for the amino-naphthalene reagent, benzenes), and 2,3-dichloronaphthoquinone-1,4- the Sulfuric acid concentration may range from (from the alpha-aminonaphthalenes), and hom 40 to 60% for best yield and purity, but can be ologs and analogs thereof. Other objects will be Within the range of 25 to 70% by Weight.
    [Show full text]