Sodium Hydrogen Sulfate

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SODIUM HYDROGEN SULFATE New specifications prepared at the 68th JECFA (2007), published in FAO JECFA Monographs 4 (2007). No ADI has been allocated to sodium hydrogen sulfate for use in production of acidified sodium chlorite. An ADI “not specified’ was established for sodium sulfate at the 57th JECFA (2001) and no ADI was allocated for sulfuric acid at the 20th JECFA (1976). SYNONYMS Sodium acid sulfate; nitre cake; sodium bisulfate; sulfuric acid, monosodium salt. DEFINITION Sodium chloride and sulfuric acid are combined at elevated temperatures to produce molten sodium hydrogen sulfate. The molten sodium hydrogen sulfate is sprayed and cooled to form a solid product with uniform particle size. C.A.S. number 7681-38-1 Chemical formula NaHSO4 Formula weight 120.06 Structural Formula O- OH Na + S O O Assay Not less than 85% DESCRIPTION White crystals or granules FUNCTIONAL USES For use in antimicrobial washing solutions CHARACTERISTICS IDENTIFICATION Solubility (Vol. 4) Freely soluble in water Sodium (Vol. 4) Passes test Sulfate (Vol. 4) Passes test PURITY Loss on drying (Vol.4) Not more than 0.8% (105o, 3h, use 25 g of sample), Water-insoluble matter Not more than 0.05% (Use 50 g of sample and 300 ml hot water) (Vol. 4) Lead (Vol. 4) Not more than 2 mg/kg Determine using an AAS/ICP-AES technique appropriate to the specified level. The selection of sample size and method of sample preparation may be based on principles of methods described in Volume 4 (under “General Methods, Metallic Impurities”). Selenium (Vol. 4) Not more than 5 mg/kg Determine using an AAS/ICP-AES technique appropriate to the specified level. The selection of sample size and method of sample preparation may be based on principles of methods described in Volume 4 (under “General Methods, Metallic Impurities”). METHOD OF ASSAY Accurately weigh about 5 g of sample, dissolve in 125 ml of water, and add phenolphthalein TS. Titrate with 1 N sodium hydroxide. Each milliliter of sodium hydroxide is equivalent to 120.06 mg of NaHSO4. .

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Sodium Sulfate
FT-08762A Sodium Sulfate Product Information Chemical name : Sodium Sulfate, ACS grade Syn.: Na2SO4 , sodium salt of sulfuric acid, Disodium sulfate; Bisodium sulfate; Dibasic sodium sulfate; Disodium monosulfate; (All.): disodium sulphate; Natriumsulfat; sodium sulphate CAS: 7757-82-6 EC number: 231-820-9 Cat. Number : 08762A, 500g 08762B, 1Kg 08762C, 2.5Kg 08762-B, Bulk Structure : Na2SO4 (anh.) Molecular Weight : 142.04 Properties: Form: white solid crystalline powder (hygroscopic) Density: 2.664 g/cm3 Melting point: 884°C Boiling point: 1429°C Refractive index (nD)/ 1.468 pKa: 10.329 and 6.351(carbonic acid) Solubility: readily soluble in water >4% w/v Storage: Room temperature (Z) Safety: Irritant. Non-flammable. Risk Statements: 36/37/38 Safety Statements: 36/37/39 Applications: Suitable for many biochemistry and biotechnology applications. P.1 FT-08762A Specifications Test Specifications Purity >99.0% Calcium (%) 0.01 Chloride (%) 0.001 Heavy Metals (as Pb) 0.0005 Iron (%) 0.001 Magnesium (%) 0.005% Nitrogen compounds (%) 0.0005% Phosphates (%) 0.001% Insolubles 0.001% Loss on Ignition (%) 0.5 pH (5%, water, 25°C) 0.01 + Technical information ●Chemistry Sodium sulfate is a neutral salt, which forms aqueous solutions with pH of 7. The Na+ ion weakly polarizes its water lig- ands provided there are metal ions in solution. Sodium sulfate reacts with sulfuric acid to give the acid salt sodium bisulfate, leading ot a temperatude-dependant equi- librium: Na2SO4 + H2SO4 ⇌ 2 NaHSO4 2− Sulfate ions (SO4 ) in solution can be indicated by the easy formation of insoluble sulfates when these solutions are treated with Ba2+ or Pb2+ salts: Na2SO4 + BaCl2 → 2 NaCl + BaSO4 Double salts with some other alkali metal sulfates are known, including Na2SO4·3K2SO4.
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Sodium Bisulfate
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