1.06345.1000 SODIUM DIHYDROGEN PHOSPHATE DIHYDRATE MERCK

Description Catalogue Number 106345 Synonyms mono-Sodium orthophosphate, Sodium biphosphate, Sodium phosphate monobasic Product Information CAS number 13472-35-0 EC number 231-449-2 Grade Ph Eur,BP,USP,JPE,E 339 Hill Formula H₂NaO₄P * 2 H₂O Chemical formula NaH₂PO₄ * 2 H₂O Molar Mass 156.00 g/mol HS Code 2835 22 00 Quality Level MQ500 Physicochemical Information Density 1.915 g/cm3 (20 °C) Melting Point 60 °C pH value 4.0 - 4.5 (50 g/l, H₂O, 25 °C) Bulk density 1000 kg/m3 Solubility 850 g/l Toxicological Information LD 50 oral LD50 Rat 8290 mg/kg LD 50 dermal LD50 Rabbit > 7940 mg/kg Safety Information according to GHS RTECS WA1900500 Storage class 10 - 13 Other liquids and solids WGK WGK 1 slightly hazardous to water Disposal 14 Inorganic salts: Container I. Neutral solutions of the these salts: Container D. Before placing in Container D, check the pH with pH-Universal indicator strips (Item No. 109535). Storage and Shipping Information Storage Store at +2°C to +30°C. Transport Information Declaration (railroad and road) ADR, RID Kein Gefahrgut Declaration (transport by air) IATA-DGR No Dangerous Good Declaration (transport by sea) IMDG-Code No Dangerous Good Specifications Assay (alkalimetric, calculated on dried substance) 98.0 - 100.5 % Assay (alkalimetric; dried substance) 98.0 - 101.0 % Identity passes test Appearance of solution passes test In water insoluble matter (calculated on dried substance) ≤ 0.15 % pH-value (1 %, water) 4.1 - 4.7 pH-value (5 %; water) 4.2 - 4.5 pH-value (5.7 %; water) 4.1 - 4.5 Chloride (Cl) ≤ 0.005 % Fluoride (F) ≤ 0.001 % Hydrogenphosphate (HPO₄) ≤ 0.5 % Sulfate (SO₄) ≤ 0.01 % Heavy metals (as Pb) ≤ 0.0005 % Al, Ca and other elements detectable with ammonia passes test As (Arsenic) ≤ 0.0001 % Cd (Cadmium) ≤ 0.0001 % Fe (Iron) ≤ 0.001 % Hg (Mercury) ≤ 0.0001 % Pb (Lead) ≤ 0.0001 % Substances reducing potassium permanganate (as O) passes test Residual solvents (ICH Q3C) excluded by production process Loss on drying (130 °C) 22.0 - 24.0 % Elemental impurity specifications have been set considering ICH Q3D (Guideline for Elemental Impurities). Class 1-3 elements are not likely to be present above the ICH Q3D option 1 limit, unless specified and indicated (*). Corresponds to Ph Eur, BP, USP, JPE, E 339 Conforms to the purity criteria on food additives according to the current European Commission Regulation

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