1.06432.5000 TRI-SODIUM CITRATE DIHYDRATE MERCK

Description Catalogue Number 106432 Synonyms Trisodium Citrate, Sodium Citrate, Dihydrate Product Information CAS number 6132-04-3 EC number 200-675-3 Grade Ph Eur,BP,JP,USP,E 331 Hill Formula C₆H₅Na₃O₇ * 2 H₂O Molar Mass 294.10 g/mol HS Code 2918 15 00 Structure formula Image Structure formula Image Quality Level MQ500 Physicochemical Information Melting Point 300 °C (anhydrous substance) pH value 7.5 - 9.0 (50 g/l, H₂O, 25 °C) Bulk density 600 kg/m3 Solubility 720 g/l Toxicological Information LD 50 oral LD50 Rat > 8000 mg/kg Safety Information according to GHS Storage class 10 - 13 Other liquids and solids WGK WGK 1 slightly hazardous to water Disposal 3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C. 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 (Perchloric acid titration, calc. on anhydrous substance (Ph Eur)) 99.0 - 101.0 % Assay (Perchloric acid titration, previously dried substance) (JP/USP) 99.0 - 100.5 % Identity (Na) passes test Identity (Citrate) passes test Identity (reaction upon ignition) passes test Appearance white to almost white crystals Appearance of solution (100 g/l, CO₂-free water) clear and colorless Acidity or alkalinity passes test pH (50 g/l CO₂-free water) 7.5 - 8.5 Chloride (Cl) ≤ 50 ppm Sulfate (SO₄) ≤ 150 ppm Heavy metals (as Pb) ≤ 5 ppm Al (Aluminium) ≤ 5 ppm As (Arsenic) ≤ 1 ppm Hg (Mercury) ≤ 1 ppm Pb (Lead) ≤ 1 ppm Oxalate (as C₂H₂O₄) ≤ 100 ppm Tartrate (C₄H₄O₆) passes test Residual solvents (ICH (Q3C)) excluded by manufacturing process Readily carbonisable substance passes test Water (according to Karl Fischer) 11.0 - 13.0 % Loss on drying (180 °C, 18 h) 10.0 - 13.0 % 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, JP, USP, E 331 Conforms to the purity criteria on food additives according to the current European Commission Regulation.

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