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Post Box: 5 UNION CHRISTIAN COLLEGE Aluva- 683 102 (Affiliated to Mahatma Gandhi University, Kottayam) Ernakulam Dt. Kerala Fax: 91-484- 2607534 Accredited by NAAC with “A” Grade, Cycle-4 91-484-2606033, 2609194 Email: [email protected] LIMITED TENDER NOTICE No. Department: Chemistry Sealed tenders are invited for the supply of the following Items: CHEMICALS ACETANILIDE ACETONE ACETONE COMML ACETOPHENONE ACETIC ACID GLACIAL ACID HYDROCHLORIC PURE ACID HYDROCHLORIC COMML ACID NITRIC COMML ACID NITRIC PURE ACID ORTHO- PHOSPHORIC ACID SULPHURIC COMML ACID SULPHURIC PURE AGAR AGAR ALCOHOL AMYL ISO – AMYL ALCOHOL ALUMINA (NEUTRAL) ALUMINIUM CHLORIDE ALUMINIUM NITRATE ALUMINIUM SULPHATE AMINO NAPHTHALENE- ALPHA AMINO PHENOL AMMONIA SOLUTION ER / AR AMMONIUM CARBONATE AMMONIUM ACETATE AMMONIUM BROMIDE AMMONIUM BORATE AMMONIUM CERIC SULPHATE AMMONIUM CERIC NITRATE AMMONIUM CHLORIDE AR AMMONIUM CHLORIDE PURE AMMONIUM CHLORIDE COMML AMMONIUM FORMATE AMMONIUM FLURIDE AMMONIUM NITRITE AMMONIUM NITRATE AMMONIUM NICKEL(II) SULPHATE AMMONIUM OXALATE AMMONIUM PURPURATE (MUREXIDE) AMMONIUM SULPHATE AMMONIUM SULPHIDE AMMONIUM IRON SULPHATE AMMONIUM FERROUS SULFATE AMMONIUM MOLYBDATE AMMONIUM IRON (II) SULPHATE 2-AMINO PYRIDINE Mohr's Salt AMMONIUM THIO CYNATE AMMONIUM THIOSULPHATE ANILINE ANISOLE PARA ANISALDEHYDE ANTHRACENE ANTHRANILIC ACID BARIUM CHLORIDE AR BARIUM CHLORIDE PURE BARIUM NITRATE BENZALDEHYDE BENZENE BENZOIC ACID BENZOIN BENZOPHENONE BENZIL BENZYL ALCOHOL BROMINE BIPHENYLE CALCIUM CHLORIDE (ANHYDROUS) CALCIUM FLURIDE CALCIUM HYDROXIDE CALCIUM NITRATE TETRAHYDRATE CARBON TETRA CHLORIDE - CCL 4 CERIUM NITRATE CHARCOAL CHLORO BENZENE CHLOROFORM CHLORAL HYDRATE CHLORO ANILINE- ORTHO( 2- CHLORO ANILINE) CHLORO ANILINE- PARA ( 4- CHLORO ANILINE) ORTHO CHLORO PHENOL (2-CHLORO PHENOL) PARA CHLOROPHENOL (4 CHLORO PHENOL) CINNAMIC ACID COBALT CHLORIDE COBALT NITRATE COBALT SULPHATE COPPER SULPHATE COPPER TURNINGS COPPER POWDER COPPER METAL AR (FOIL) CUPRIC ACETATE P.DICHLORO BENZENE / 1,4 Dichloro Benzene O.DICHLORO BENZENE DICHLORO METHANE DIMETHYL GLYOXIME DIPHENYL AMINE DISODIUM HYDROGEN PHOSPHATE ETHER (DIETHYL) ETHYL ACETATE ETHYL METHYL KETONE(BUTA 2-ONE) EOSIN ETHYL ACETO ACETATE ETHYL CYANOACETATE EDTA DI SODIUM SALT ETHYL BENZOATE ETHYL SALICYLATE ETHYL GLYCEROL FERROIN SOLUTION FEEROUS AMMONIUM SULPHATE (Mohr's salt) FERRIC AMMONIUM SULPHATE AR / GR (AMMONIUM FERRIC SULPHATE) - FERRIC ALUM FERRIC AMMONIUM SULPHATE (PURE) III FERRIC SULPHATE FERRIC HYDROXIDE FERRIC CHLORIDE FERROUS CHROMATE FERROUS AMONIUM SULPHATE FERROUS AMMONIUM SULPHATE PURE/AR FERRIC PERIODATE FERRIC PERIODIDE FERROUS SULPHATE FERROUS SULPHIDE STICK FORMIC ACID GELATIN GLUCOSE HEXANE HYDROGEN PEROXIDE HYDRAZINE HYDROCHLORIDE HYDROXYLAMINE HYDROCHLORIDE 5-HYDROXYMETHYL FURFURAL 8-HYDROXY QUINOLINE IODINE LITHIUM NITRATE LEAD ACETATE LEAD OXIDE LEAD NITRATE MANGANESE DIOXIDE MANGANESE SULPHATE MAGNESIUM NITRATE MAGNESIUM NITRATE AR MERCURIC CHLORIDE METHANOL /Lieshman Stain METHYL ACETATE METHYL BENZOATE N,N-DIMETHYL ANILINE N-PHENYLANTRANILIC ACID NAPHTHOL - ALPHA (1- NAPHTHOL) NAPHTHOL - BETA (2- NAPHTHOL) NAPHTHALINE NICKEL AMMONIUM SULPHATE NICKEL NITRATE NITROANILINE-META ( 3-NITRO ANILINE) NITROANILINE-ORTHO( 2-NITRO ANILINE) NITROANILINE-PARA ( 4-NITRO ANILINE) NITROBENZENE NITROBENZOIC ACID-META( 3- NITRO BENZOIC ACID) NITROPHENOL-ORTHO( 2-NITRO PHENOL) NITROPHENOL-PARA ( 4-NITRO PHENOL) OXALIC ACID PARA ROSANILINE (FUCHSINE) PETROLIUM BENZENE PETROLIUM ETHER PHTHALIC ACID PHENOL (CARBOLIC ACID ) PHENYL HYDRAZINE HYDROCHLORIDE PICRIC ACID PHENOLPHTHALEIN POTASSIUM CARBONATE POTASSIUM CHLORIDE POTASSIUM CHROMATE POTASSIUM DICHROMATE POTASSIUM DICHROMATE AR POTASSIUM FERROCYNIDE POTASSIUM FERRICYANIDE POTASSIUM HYDROXIDE POTASSIUM IODIDE POTASSIUM IODIDE AR POTASSIUM NITRITE POTASSIUM NITRATE POTASSIUM NITRATE AR POTASSIUM OXALATE POTASSIUM PERIODATE POTASSIUM PERMANGANATE POTASSIUM THIOCYNATE RESORCINOL SALICYLIC ACID SALICYLALDEHYDE SCHIFF”S REAGGENT SELENIUM NITRATE SILICA GEL SILICON WAX SILICA GEL WHITE SILICA GEL 60 - 100 MESH SILVER NITRATE AR SILVER NITRATE SODA LIME SODIUM ACETATE TRI HYDRATE SODIUM BI CARBONATE AR SODIUM BI CARBONATE / SODIUM HY.CARBONATE SODIUM BISULPHITE SODIUM CARBONATE SODIUM HYDROXIDE FLAKES SODIUM HYDROXIDE PELLETS SODIUM HYDROGEN PHOSPHATE SODIUM NITRITE SODIUM PEROXIDE SODIUM STANNITE SODIUM SULPHITE SODIUM TETRA BORATE(BORAX) SODIUM THIO SULPHATE SODIUM THOSULPHATE PENTAHYDRATE SODIUM TUNGSTATE STANOUS CHLORIDE STARCH STRONTIUM CARBONATE STRONTIUM PHOSPHATE SUCROSE SUCCINIC ACID SULPHAMIC ACID SULPHANILIC ACID SULPHANILIC ACID AR THIAMINE HYDROCHLORIDE THIOUREA TITAN YELLOW TINMETAL GRANULATED TOLUENE TOLUDINE -ORTHO AR TOLUDINE -ORTHO URANIL NITRATE UREA ZINC DUST ZIRCONYL NITRATE GLASSWARES BEAKER 50 ML BEAKER 150ml Borosil BEAKER 250ml BEAKER 500ml BEAKER 1000ml BOTTLE WASH BOTTLE WEIGHING BURETTE 50 ml CHINA DISH CAPILARY TUBE CONDENSOR Leibing's CRUCIBLE FUSED SILICA DROPPER Glass ( filler ) FLASK CONICAL 50 ml FLASK CONICAL 100 ml FLASK CONICAL 250 ml FLASK STANDARD 100ml FLASK STANDARD 250ml FLASK STANDARD 500ml FUNNEL BUCKNER Porclain FUNNEL Filtering FUNNEL 75mm dia Glass tube –Borosil Glass Rod - LID CRUSIBLE PIPETTE 5 ml PIPETTE 10 ml PIPETTE 20 ml Round Bottom Flask 50 ml Round Bottom Flask 100 ml Round Bottom Flask 250 ml TEST TUBE SM TEST TUBE 15x125 THERMOMETER - 110 0(SENSITIVE) TUBE Boiling TUBE CENTRIFUGE TUBE FUSION sodium exp: WATCH GLASS Large WATCH GLASS Small PERISHABLES CLAY PIPE TRIANGLE CORCK Rubber VARRIOUS SIZE FILTER PAPER sheet Ordinary FILTER PAPER sheet No 1 FILTER PAPER No 40 FILTER PAPER No 41 TLC ALUMINIUM Sheet WIRE GAUSE both side BRUSH for test tube BRUSH for Burette Rubber tube Tender Fee : Rs.400 + 12 % GST The envelopes containing the tender should bear the superscription “Limited Tender for PD account Chemistry-2017” and should be addressed to “The Principal, Union Christian College; Aluva-683102” may submit the quotations on their own papers. Last date for receipt of tender is 29-11-2017 before 3 p.m. Late tenders will not be accepted. The tenders will be opened on 29-11-2017 The prices may be quoted per unit/item The quantity of items needed is approximate; it may vary at the time of purchase. The maximum period required for delivery of the articles should also be mentioned. During submission of the tender an agreement is to be signed on bond paper of value 200/- ensuring that the items will be supplied on time whose formatis available in the website www.uccollege.edu.in Place: Aluva Dr.P Thomas Mathew Date: 17-11-2017 Principal .
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  • Deleterious Effects of Formic Acid Without Salt Additives on the HILIC Analysis of Basic Compounds

    Deleterious Effects of Formic Acid Without Salt Additives on the HILIC Analysis of Basic Compounds

    HPLC TN-1040 Deleterious Effects of Formic Acid without Salt Additives on the HILIC Analysis of Basic Compounds A. Carl Sanchez and Monika Kansal Phenomenex, Inc., Torrance, CA, USA Abstract Formic acid is an often-used mobile phase additive for of weak acids increase. The pKa shifts can be quite significant adjusting pH in reversed phase liquid chromatography (RPLC), in the high organic environment used for HILIC. For example, especially when using mass spectrometric (MS) detection. This weak bases with aqueous pKa less than ~4 typically will not be practice has been carried over to hydrophilic interaction liquid protonated in HILIC mobile phases when 0.1 v/v % formic acid chromatography (HILIC) separations. However, the mechanisms is used. The pKa of the base is decreased in HILIC mobile phase of action and the relative importance of buffer cation and while the pKa of the formic acid is increased. The increased pKa anion are much different in HILIC than RPLC. For this reason of formic acid leads to an increase in mobile phase pH. The buffer selection in HILIC mode requires consideration of buffer, combination of these opposing changes in pKa results in 0.1 v/v analyte and chromatographic sorbent chemical properties to % formic acid being too weak to protonate bases with pKa < ~4. make an appropriate choice. Proper choice of buffer can make Therefore, formic acid can provide acceptable chromatographic the difference between success and failure with HILIC. In this performance for weak bases with aqueous pKa < ~4. However, paper, the behavior of formic acid with and without the addition basic compounds with aqueous pKa greater than ~4 can be of various salts on the HILIC separation of basic analytes is protonated under HILIC conditions with formic acid.
  • Ammonium Carbonate. Drogen in Chlorine Is Dissolved in Water and Then Reacted with Gaseous Ammo- (A) Ammonium Carbonate ((NH4)2CO3, Nia

    Ammonium Carbonate. Drogen in Chlorine Is Dissolved in Water and Then Reacted with Gaseous Ammo- (A) Ammonium Carbonate ((NH4)2CO3, Nia

    Food and Drug Administration, HHS § 184.1138 (1) The ingredient is used as a dough (d) Prior sanctions for this ingredient strengthener as defined in § 170.3(o)(6) different from the uses established in of this chapter; a leavening agent as this section do not exist or have been defined in § 170.3(o)(17) of this chapter; waived. a pH control agent as defined in § 170.3(o)(23) of this chapter; and a [48 FR 52439, Nov. 18, 1983] texturizer as defined in § 170.3(o)(32) of § 184.1138 Ammonium chloride. this chapter. (2) The ingredient is used in food at (a) Ammonium chloride (NH4Cl, CAS levels not to exceed current good man- Reg. No. 12125–02–9) is produced by the ufacturing practice. reaction of sodium chloride and an am- (d) Prior sanctions for this ingredient monium salt in solution. The less solu- different from the uses established in ble sodium salt separates out at ele- this section do not exist or have been vated temperatures, and ammonium waived. chloride is recovered from the filtrate on cooling. Alternatively, hydrogen [48 FR 52439, Nov. 18, 1983] chloride formed by the burning of hy- § 184.1137 Ammonium carbonate. drogen in chlorine is dissolved in water and then reacted with gaseous ammo- (a) Ammonium carbonate ((NH4)2CO3, nia. Ammonium chloride is crystallized CAS Reg. No. 8000–73–5) is a mixture of from the solution. ammonium bicarbonate (NH4HCO3) and (b) The ingredient meets the speci- ammonium carbamate (NH2COONH4). fications of the Food Chemicals Codex, It is prepared by the sublimation of a 3d Ed.