Linear Alkylbenzene Sulfonates and Related Compounds
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Sodium Dodecyl Sulfate
Catalog Number: 102918, 190522, 194831, 198957, 811030, 811032, 811033, 811034, 811036 Sodium dodecyl sulfate Structure: Molecular Formula: C12H25NaSO4 Molecular Weight: 288.38 CAS #: 151-21-3 Synonyms: SDS; Lauryl sulfate sodium salt; Dodecyl sulfate sodium salt; Dodecyl sodium sulfate; Sodium lauryl sulfate; Sulfuric acid monododecyl ester sodium salt Physical Appearance: White granular powder Critical Micelle Concentration (CMC): 8.27 mM (Detergents with high CMC values are generally easy to remove by dilution; detergents with low CMC values are advantageous for separations on the basis of molecular weight. As a general rule, detergents should be used at their CMC and at a detergent-to-protein weight ratio of approximately ten. 13,14 Aggregation Number: 62 Solubility: Soluble in water (200 mg/ml - clear, faint yellow solution), and ethanol (0.1g/10 ml) Description: An anionic detergent3 typically used to solubilize8 and denature proteins for electrophoresis.4,5 SDS has also been used in large-scale phenol extraction of RNA to promote the dissociation of protein from nucleic acids when extracting from biological material.12 Most proteins bind SDS in a ratio of 1.4 grams SDS to 1 gram protein. The charges intrinsic to the protein become insignificant compared to the overall negative charge provided by the bound SDS. The charge to mass ratio is essentially the same for each protein and will migrate in the gel based only on protein size. Typical Working Concentration: > 10 mg SDS/mg protein Typical Buffer Compositions: SDS Electrophoresis -
ECO-Ssls for Pahs
Ecological Soil Screening Levels for Polycyclic Aromatic Hydrocarbons (PAHs) Interim Final OSWER Directive 9285.7-78 U.S. Environmental Protection Agency Office of Solid Waste and Emergency Response 1200 Pennsylvania Avenue, N.W. Washington, DC 20460 June 2007 This page intentionally left blank TABLE OF CONTENTS 1.0 INTRODUCTION .......................................................1 2.0 SUMMARY OF ECO-SSLs FOR PAHs......................................1 3.0 ECO-SSL FOR TERRESTRIAL PLANTS....................................4 5.0 ECO-SSL FOR AVIAN WILDLIFE.........................................8 6.0 ECO-SSL FOR MAMMALIAN WILDLIFE..................................8 6.1 Mammalian TRV ...................................................8 6.2 Estimation of Dose and Calculation of the Eco-SSL ........................9 7.0 REFERENCES .........................................................16 7.1 General PAH References ............................................16 7.2 References Used for Derivation of Plant and Soil Invertebrate Eco-SSLs ......17 7.3 References Rejected for Use in Derivation of Plant and Soil Invertebrate Eco-SSLs ...............................................................18 7.4 References Used in Derivation of Wildlife TRVs .........................25 7.5 References Rejected for Use in Derivation of Wildlife TRV ................28 i LIST OF TABLES Table 2.1 PAH Eco-SSLs (mg/kg dry weight in soil) ..............................4 Table 3.1 Plant Toxicity Data - PAHs ..........................................5 Table 4.1 -
OECD Environment Health and Safety Publications Series on Testing and Assessment No
OECD Environment Health and Safety Publications Series on Testing and Assessment No. 21 Detailed Review Paper Appraisal of Test Methods for Sex Hormone Disrupting Chemicals Environment Directorate ORGANISATION FOR ECONOMIC CO-OPERATION AND DEVELOPMENT Paris May 2001 1 Also Published in the Series Testing and Assessment: No. 1, Guidance Document for the Development of OECD Guidelines for Testing of Chemicals (1993; reformatted 1995) No. 2, Detailed Review Paper on Biodegradability Testing (1995) No. 3, Guidance Document for Aquatic Effects Assessment (1995) No. 4, Report of the OECD Workshop on Environmental Hazard/Risk Assessment (1995) No. 5, Report of the SETAC/OECD Workshop on Avian Toxicity Testing (1996) No. 6, Report of the Final Ring-test of the Daphnia magna Reproduction Test (1997) No. 7, Guidance Document on Direct Phototransformation of Chemicals in Water (1997) No. 8, Report of the OECD Workshop on Sharing Information about New Industrial Chemicals Assessment (1997) No. 9 Guidance Document for the Conduct of Studies of Occupational Exposure to Pesticides During Agricultural Application (1997) No. 10, Report of the OECD Workshop on Statistical Analysis of Aquatic Toxicity Data (1998) No. 11, Detailed Review Paper on Aquatic Testing Methods for Pesticides and industrial Chemicals (1998) No. 12, Detailed Review Document on Classification Systems for Germ Cell Mutagenicity in OECD Member Countries (1998) No. 13, Detailed Review Document on Classification Systems for Sensitising Substances in OECD Member Countries 1998) No. 14, Detailed Review Document on Classification Systems for Eye Irritation/Corrosion in OECD Member Countries (1998) No. 15, Detailed Review Document on Classification Systems for Reproductive Toxicity in OECD Member Countries (1998) No. -
Tutorial on Working with Micelles and Other Model Membranes
Tutorial on Working with Micelles and Model Membranes Chuck Sanders Dept. of Biochemistry, Dept. of Medicine, and Center for Structural Biology Vanderbilt University School of Medicine. http://structbio.vanderbilt.edu/sanders/ March, 2017 There are two general classes of membrane proteins. This presentation is on working with integral MPs, which traditionally could be removed from the membrane only by dissolving the membrane with detergents or organic solvents. Multilamellar Vesicles: onion-like assemblies. Each layer is one bilayer. A thin layer of water separates each bilayer. MLVs are what form when lipid powders are dispersed in water. They form spontaneously. Cryo-EM Micrograph of a Multilamellar Vesicle (K. Mittendorf, C. Sanders, and M. Ohi) Unilamellar Multilamellar Vesicle Vesicle Advances in Anesthesia 32(1):133-147 · 2014 Energy from sonication, physical manipulation (such as extrusion by forcing MLV dispersions through filters with fixed pore sizes), or some other high energy mechanism is required to convert multilayered bilayer assemblies into unilamellar vesicles. If the MLVs contain a membrane protein then you should worry about whether the protein will survive these procedures in folded and functional form. Vesicles can also be prepared by dissolving lipids using detergents and then removing the detergent using BioBeads-SM dialysis, size exclusion chromatography or by diluting the solution to below the detergent’s critical micelle concentration. These are much gentler methods that a membrane protein may well survive with intact structure and function. From: Avanti Polar Lipids Catalog Bilayers can undergo phase transitions at a critical temperature, Tm. Native bilayers are usually in the fluid (liquid crystalline) phase. -
Effect of Surfactant–Bile Interactions on the Solubility of Hydrophobic
Article Cite This: Mol. Pharmaceutics 2018, 15, 5741−5753 pubs.acs.org/molecularpharmaceutics Effect of Surfactant−Bile Interactions on the Solubility of Hydrophobic Drugs in Biorelevant Dissolution Media Zahari Vinarov,*,† Vladimir Katev,† Nikola Burdzhiev,‡ Slavka Tcholakova,† and Nikolai Denkov† † Department of Chemical and Pharmaceutical Engineering, Faculty of Chemistry and Pharmacy, Sofia University, 1164 Sofia, Bulgaria ‡ Department of Organic Chemistry and Pharmacognosy, Faculty of Chemistry and Pharmacy, Sofia University, 1164 Sofia, Bulgaria *S Supporting Information ABSTRACT: Biorelevant dissolution media (BDM) methods are commonly employed to investigate the oral absorption of poorly water-soluble drugs. Despite the significant progress in this area, the effect of commonly employed pharmaceutical excipients, such as surfactants, on the solubility of drugs in BDM has not been characterized in detail. The aim of this study is to clarify the impact of surfactant−bile interactions on drug solubility by using a set of 12 surfactants, 3 model hydrophobic drugs (fenofibrate, danazol, and progesterone) and two types of BDM (porcine bile extract and sodium taurodeoxycholate). Drug precipitation and sharp nonlinear decrease in the solubility of all studied drugs is observed when drug-loaded ionic surfactant micelles are introduced in solutions of both BDM, whereas the drugs remain solubilized in the mixtures of nonionic polysorbate surfactants + BDM. One-dimensional and diffusion-ordered 1H NMR spectroscopy show that mixed bile salt + surfactant micelles with low drug solubilization capacity are formed for the ionic surfactants. On the other hand, separate surfactant-rich and bile salt-rich micelles coexist in the nonionic polysorbate surfactant + bile salt mixtures, explaining the better drug solubility in these systems. -
Cleaning and Sanitizing I. Cleaning 2 Types Of
Cleaning and Sanitizing CLEANING AND SANITIZING I. CLEANING 2 TYPES OF CLEANING COMPOUNDS 2 PROPERTIES OF A CLEANER 2 FACTORS THAT AFFECT CLEANING EFFICIENCY 2 CLEANING OPERATION 3 II. SANITIZING 4 HEAT 4 CHEMICAL SANITIZERS 5 FACTORS AFFECTING SANITIZING 7 III. DISHWASHING MACHINES 8 HOT WATER SANITIZING 8 CHEMICAL SANITIZING 9 REQUIREMENTS FOR A SUCCESSFUL DISHWASHING OPERATION 10 CHECKING A DISHMACHINE 10 COMMON PROBLEMS 12 IV. DEFINITIONS: 14 V. QUIZ 16 VI. ANSWER KEY TO QUIZ 18 VII. REFERENCES: 18 1 Cleaning and Sanitizing This section is presented primarily for information. The only information the BETC participant will be responsible for is to know the sanitization standards for chemical and hot water sanitizing as found in the Rules for Food Establishment Sanitation. CLEANING AND SANITIZING I. CLEANING Cleaning is a process which will remove soil and prevent accumulation of food residues which may decompose or support the growth of disease causing organisms or the production of toxins. Listed below are the five basic types of cleaning compounds and their major functions: 1. Basic Alkalis - Soften the water (by precipitation of the hardness ions), and saponify fats (the chemical reaction between an alkali and a fat in which soap is produced). 2. Complex Phosphates - Emulsify fats and oils, disperse and suspend oils, peptize proteins, soften water by sequestering, and provide rinsability characteristics without being corrosive. 3 Surfactant - (Wetting Agents) Emulsify fats, disperse fats, provide wetting properties, form suds, and provide rinsability characteristics without being corrosive. 4. Chelating - (Organic compounds) Soften the water by sequestering, prevent mineral deposits, and peptize proteins without being corrosive. -
(12) Patent Application Publication (10) Pub. No.: US 2008/0299054 A1 Chandar Et Al
US 20080299054A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2008/0299054 A1 Chandar et al. (43) Pub. Date: Dec. 4, 2008 (54) PERSONAL CARE COMPOSITIONS WITH Publication Classification ENHANCED FRAGRANCE DELVERY (51) Int. Cl. (75) Inventors: Prem Chandar, Closter, NJ (US); A6IR 8/34 (2006.01) Lin Yang, Woodbridge, CT (US) A6II 3/14 (2006.01) A6II 3/17 (2006.01) Correspondence Address: UNILEVER PATENT GROUP (52) U.S. Cl. .............. 424/54; 424/59: 424/65; 424/70.1; 800 SYLVANAVENUE, AG West S. Wing 514/588 ENGLEWOOD CLIFFS, NJ 07632-3100 (US) (57) ABSTRACT (73) Assignee: CONOPCO, INC., d/b/a UNILEVER, Englewood Cliffs, NJ A personal care product is provided which includes a fra (US) grance, a Substituted urea and a quaternary ammonium salt. The Substituted urea and quaternary ammonium salt operate (21) Appl. No.: 11/755,009 together as a scent boosting system to enhance Volatilization offragrance components upon the personal care composition (22) Filed: May 30, 2007 being first applied to human skin or hair. US 2008/0299054 A1 Dec. 4, 2008 PERSONAL CARE COMPOSITIONS WITH structure AB, wherein A is a cationic charged compo ENHANCED FRAGRANCE DELVERY nent of the salt AB, B is an anionic charged component of the salt AB, and BACKGROUND OF THE INVENTION 0013 A has a single quaternized nitrogen atom, at least two hydroxy groups and a molecular weight no 0001 1. Field of the Invention higher than about 250. 0002 The invention concerns personal care compositions which upon application to a human body Surface quickly release fragrance components thereby improving aesthetics DETAILED DESCRIPTION OF THE INVENTION of these compositions. -
Linear Alkylbenzene Sulphonate (CAS No
Environmental Risk Assessment LAS Linear Alkylbenzene Sulphonate (CAS No. 68411-30-3) Revised ENVIRONMENTAL Aspect of the HERA Report = February 2013 = 1 1. Contents 2. Executive summary 3. Substance characterisation 3.1 CAS No. and grouping information 3.2 Chemical structure and composition 3.3 Manufacturing route and production/volume statistics 3.4 Consumption scenario in Europe 3.5 Use application summary 4. Environmental safety assessment 4.1 Environmental exposure assessment 4.1.1 Biotic and abiotic degradability 4.1.2 Removal 4.1.3 Monitoring studies 4.1.4 Exposure assessment: scenario description 4.1.5 Substance data used for the exposure calculation 4.1.6 PEC calculations 4.1.7 Bioconcentration 4.2 Environmental effects assessment 4.2.1 Ecotoxicity 4.2.1.1 Aquatic ecotoxicity 4.2.1.2 Terrestrial ecotoxicity 4.2.1.3 Sediment ecotoxicity 4.2.1.4 Ecotoxicity to sewage microorganisms 4.2.1.5 Reassurance on absence of estrogenic effects 4.2.2 PNEC calculations 4.2.2.1 Aquatic PNEC 4.2.2.2 Terrestrial PNEC 4.2.2.3 Sludge PNEC 4.2.2.4 Sediment PNEC 4.2.2.5 STP PNEC 4.3 Environment risk assessment 5. 5. References 6. Contributors to the report 6.1 Substance team 6.2 HERA environmental task force 6.3 HERA human health task force 6.4 Industry coalition for the OECD/ICCA SIDS assessment of LAS 2 2. Executive Summary Linear alkylbenzene sulphonate (LAS) is an anionic surfactant. It was introduced in 1964 as the readily biodegradable replacement for highly branched alkylbenzene sulphonates (ABS). -
Quaternary Ammonium Compositions and Their Uses
Europaisches Patentamt (19) European Patent Office Office europeen des brevets (11) EP 0 726 246 A1 (12) EUROPEAN PATENT APPLICATION (43) Date of publication: (51) |nt. CI.6: C07C 21 1/63, C01 B 33/44, 14.08.1996 Bulletin 1996/33 C1 p 1/62j Q21 C 5/02, (21) Application number: 96101900.7 A61 K 7/50 //C09D7/12 (22) Date of filing: 09.02.1996 (84) Designated Contracting States: • Campbell, Barbara DE DK ES FR GB IT NL Bristol, PA 1 9007 (US) • Chiavoni, Araxi (30) Priority: 10.02.1995 US 385295 Trenton, N J 0861 0 (US) • Magauran, Edward (71 ) Applicant: RHEOX INTERNATIONAL, INC. Westhampton, NJ 08060 (US) Hightstown, New Jersey 08520 (US) (74) Representative: Strehl Schubel-Hopf Groening & (72) Inventors: Partner • Cody, Charles, Dr. Maximilianstrasse 54 Robbinsville, NJ 08691 (US) 80533 Munchen (DE) (54) Quaternary ammonium compositions and their uses (57) Quaternary ammonium compositions are described which are made using diluents including soya bean oil, caster oil, mineral oils, isoparaffin/naphthenic and coconut oil. Such diluents remain as diluents in the final product and generally have a vapor pressure of 1mm of Hg or less at 25°C, and are liquid at ambient temperature. The quaternary/ammonium diluent com- positions have low volatile organic compound emission rates and high flash points, and can be tailored to partic- ular applications. Such applications include use a fabric softeners, cosmetics ingredients, deinking additives, surfactants, and reaction materials in the manufacture of organoclays. < CO CM CO CM o Q_ LU Printed by Rank Xerox (UK) Business Services 2.13.0/3.4 EP 0 726 246 A1 Description BACKGROUND OF THE INVENTION 5 1 . -
Soaps and Detergent Book
,â\ soAPS hù \-.-.1' ¿'>/'--'u\ r *gg, Ç DETERGENTS ,' '.-"- iI ' \' /'l'- ''t "*-**'*o'*q-å- þr,-'- COIUTEIUTS , Cleaning products play an essential role in our daily lives. By safely and effectively removing soils, germs HISTORY .........4 and other contaminants, they help us to stay healthy, I care for our homes and possessions, and make our ì surroundings more pleasant. The Soap and Detergent Association (SDA) recognizes that public understanding of the safety and benefits of cleaning products is critical to their proper use. So we've revised Soaþs and Detergents to feature the most current information in an easy-to-read format. This second edition summarizes key developments in the history of cleaning products; the science of how they work; the procedures used to evaluate their safety for people and the environment; the functions of various products and their ingredients; and the most common manufacturing processes. SDA hopes that consumers, educators, students, media, government officials, businesses and others ñnd Soaps and Detergents avaluable resource of information about cleaning products. o ' \o.-. t ¡: 2nd Edition li¡: orpq¿ The Soap ancl Detergent Association I :. I The Soap an4\Detergent Associatidn ^T',-¡ (\ "i' ) t'l T/ j *.'Ò. t., ,,./-t"'\\\,1 ,,! -\. r'í-\ HISTORY r The earlv Greeks bathed for Ð aesthetié reasons and apparently did not use soap. Instead, they I The origins of personal cleanliness cleaned their bodies with blocks of I date back to prehistoric times. Since clay, sand, pumice and ashes, then water is essential for life, the eadiest anointed themselves with oil, and people lived near water and knew scraped off the oil and dirt with a something about its cleansing 11 Records show that ancient metal instrument known as a strigil. -
Biodegradation of Linear Alkylbenzene Sulfonates
BIODEGRADATION OF LINEAR ALKYLBENZENE SULFONATES Applicable to these current Stepan products: BIO-SOFT® D-40 BIO-SOFT® N-300 BIO-SOFT® N-411 BIO-SOFT® S-101 BIO-SOFT® S-101 LS BIO-SOFT® S-111 H BIO-SOFT® S-118 BIO-SOFT® S-120 NACCONOL® 40G NACCONOL® 90G POLYSTEP® A-15 POLYSTEP® A-15-30K STEPWET® DF-90 STEPANTAN® DT-60 BIO-SOFT® D-62 LT BIO-SOFT® L2P-123 POLYSTEP®A-15F Applicable to these inactive Stepan products: BIO-SOFT® D-53 BIO-SOFT® S-100 BIO-SOFT® S-130 POLYSTEP® A-13 POLYSTEP® A-4 POLYSTEP® A-7 STEPANTAN® DS-40 Biodegradation Information: Since their introduction in 1965, linear alkylbenzene sulfonates (LAS) have been used throughout the world as the main anionic surfactant in both household and industrial detergent products. As a result of their wide spread use, the biodegradation characteristics of LAS have been studied thoroughly under both laboratory and environmental conditions. Laboratory tests typically show that LAS will undergo rapid primary and ultimate biodegradation. Due to its favorable biodegradation characteristics, LAS is presently listed as a recommended control substance in the OECD "Readily Biodegradability: Closed Bottle Test". OECD Modified Sturm testing of a LAS product, BIO-SOFT® S-100, showed this product to be readily biodegradable. Primary biodegradation, which can reach 100% in 3 days, involves oxidation of the carbon atoms at the alkyl side chain to form transient, low toxicity sulfophenyl carboxylate intermediates. This is followed by complete breakdown characterized by cleavage of the aromatic ring and total mineralization to carbon dioxide, water and inorganic sulfonates. -
(12) United States Patent (10) Patent No.: US 8.470,756 B2 O’Brien (45) Date of Patent: Jun
USOO8470756B2 (12) United States Patent (10) Patent No.: US 8.470,756 B2 O’Brien (45) Date of Patent: Jun. 25, 2013 (54) ECO-FRIENDLY LAUNDRY 6,995,127 B1 2/2006 Smith et al. PRETREATMENT COMPOSITIONS 7,077,870 B2 7/2006 Findlay et al. 7,250,174 B2 7/2007 Lee et al. 7,452,917 B2 11/2008 Baumoeller et al. (75) Inventor: Jeanne A. O’Brien, Racine, WI (US) 7,608,573 B1 10/2009 Scheuing et al. 7,618.931 B1 1 1/2009 Scheuing et al. (73) Assignee: S.C. Johnson & Son, Inc., Racine, WI 2002/0028755 A1* 3/2002 Van Dijk et al. .............. 510,392 2003, OO13629 A1 1/2003 Kischkelet al. (US) 2003/0027736 A1 2/2003 Raths et al. 2003/O122101 A1 7/2003 Prozzo et al. (*) Notice: Subject to any disclaimer, the term of this 2006.0053566 A1 3/2006 Prozzo et al. patent is extended or adjusted under 35 2006/010.5937 A1 5, 2006 Duran U.S.C. 154(b) by 312 days. 2007, OO 10416 A1 1, 2007 Wu et al. 2007/0179074 A1 8, 2007 Souter et al. 2007/O1968.98 A1 8, 2007 Nielsen et al. (21) Appl. No.: 12/405,862 2007/0275021 A1 11/2007 Lee et al. 2008/0000032 A1 1/2008 Wieprecht et al. (22) Filed: Mar 17, 2009 2008.0171683 A1 7/2008 Johnson et al. 2008/O187958 A1 8, 2008 Nielsen et al. (65) Prior Publication Data 2008. O194453 A1 8/2008 Lang 2009.0054294 A1 2/2009 Theiler US 2010/O144580 A1 Jun.