Product Information CAS number 1303-96-4 EC index number 005-011-01-1 EC number 215-540-4 Grade ACS,ISO,Reag. Ph Eur Hill Formula B₄Na₂O₇*10H₂O Chemical formula Na₂B₄O₇*10 H₂O Molar Mass 381.32 g/mol HS Code 2840 19 90 Applications Application di-Sodium tetraborate decahydrate for analysis ACS,ISO,Reag. Ph Eur. CAS 1303-96-4, chemical formula Na₂B₄O₇*10 H₂O. Physicochemical Information Density 1.72 g/cm3 (20 °C) Melting Point 75 °C Elimination of water of crystallisation pH value 9.2 (47 g/l, H₂O, 20 °C) Vapor pressure 0.213 hPa (20 °C) Bulk density 750 kg/m3 Solubility 49.74 g/l Toxicological Information LD 50 oral LD50 Rat 2660 mg/kg LD 50 dermal LD50 Rabbit > 2000 mg/kg Safety Information according to GHS Hazard Pictogram(s) Hazard Statement(s) H360FD: May damage fertility. May damage the unborn child. H319: Causes serious eye irritation. Precautionary Statement(s) P201: Obtain special instructions before use. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P308 + P313: IF exposed or concerned: Get medical advice/ attention. RTECS VZ2275000 Storage class 6.1 D Non combustible, acute toxicity cat. 3 / toxic or substances with chronic effects WGK WGK 1 slightly water endangering 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. Safety Information Hazard Symbols Toxic Categories of danger toxic for reproduction R Phrase R 60-61-36 May impair fertility.May cause harm to the unborn child.Irritating to eyes. S Phrase S 53-45-26 Avoid exposure - obtain special instructions before use.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Storage and Shipping Information Storage Store at +5°C to +30°C. Specifications Assay (acidimetric) 99.5 - 103.0 % Identity passes test Appearance of solution passes test Insoluble matter ≤ 0.005 % pH-value (0.01 M Solution, 25 °C) 9.15 - 9.20 pH-value (4 %, water) 9.0 - 9.6 Chloride (Cl) ≤ 0.0007 % Phosphate (PO₄) ≤ 0.001 % Sulphate (SO₄) ≤ 0.005 % Heavy metals (as Pb) ≤ 0.001 % As (Arsenic) ≤ 0.0005 % Ca (Calcium) ≤ 0.005 % Cu (Copper) ≤ 0.0005 % Fe (Iron) ≤ 0.0005 % NH₄ (Ammonium) ≤ 0.001 % Pb (Lead) ≤ 0.0005 % Corresponds to ACS,ISO,Reag. Ph Eur
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