Description Catalogue Number 106579 Replaces SX0718; SX0718-1 Synonyms Sodium monohydrogen phosphate, Sodium phosphate dibasic Description di-Sodium hydrogen phosphate dodecahydrate Product Information CAS number 10039-32-4 EC number 231-448-7 Grade ISO,Reag. Ph Eur Hill Formula HNa₂O₄P * 12 H₂O Chemical formula Na₂HPO₄ * 12 H₂O Molar Mass 358.14 g/mol HS Code 2835 22 00 Applications Application di-Sodium hydrogen phosphate dodecahydrate for analysis EMSURE® ISO,Reag. Ph Eur. CAS 10039-32-4, chemical formula Na₂HPO₄ * 12 H₂O. Physicochemical Information Density 1.52 g/cm3 (20 °C) pH value 9.0 - 9.3 (50 g/l, H₂O, 20 °C) Bulk density 800 - 900 kg/m3 Solubility 218 g/l Toxicological Information LD 50 oral LD50 Rat > 2000 mg/kg Safety Information according to GHS Storage class 10 - 13 Other liquids and solids WGK WGK 1 slightly water endangering 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 +15°C to +25°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) 99.0 - 102.0 % Identity passes test Appearance of solution passes test Sodium Dihydrogene phospate ≤ 2.5 % pH-value (5 %; water) 9.0 - 9.3 Chloride (Cl) ≤ 0.0005 % Sulphate (SO₄) ≤ 0.005 % Total nitrogen (N) ≤ 0.001 % Heavy metals (as Pb) ≤ 0.0005 % As (Arsenic) ≤ 0.00005 % Cu (Copper) ≤ 0.0002 % Fe (Iron) ≤ 0.0005 % K (Potassium) ≤ 0.005 % Pb (Lead) ≤ 0.0005 % Reducing substances passes test Water 57.0 - 61.0 % Corresponds to ISO,Reag. Ph Eur
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