Description Catalogue Number 104874 Product Information CAS number 877-24-7 EC number 212-889-4 Grade Reag. Ph Eur Hill Formula C₈H₅KO₄ Molar Mass 204.22 g/mol HS Code 2917 39 95 Structure formula Image Applications Application Potassium hydrogen phthalate for analysis EMSURE® Reag. Ph Eur. CAS 877-24-7, pH 4.0 (50 g/l, H₂O, 20 °C). Physicochemical Information Density 1.636 g/cm3 Melting Point 295 - 300 °C pH value 4.0 (50 g/l, H₂O, 20 °C) Bulk density 900 kg/m3 Solubility 80 g/l Toxicological Information LD 50 oral LD50 Rat > 3200 mg/kg Safety Information according to GHS RTECS CZ4326000 Storage class 10 - 13 Other liquids and solids 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. Storage and Shipping Information Storage Store at +5°C to +30°C. Specifications Assay (Perchloric acid titration from dried substance) ≥ 99.5 % Identity (IR-spectrum) passes test In water insoluble matter ≤ 0.005 % Chloride (Cl) ≤ 0.002 % Sulfur compounds (as SO₄) ≤ 0.005 % Heavy metals (as Pb) ≤ 0.0005 % Cu (Copper) ≤ 0.0002 % Fe (Iron) ≤ 0.0005 % Na (Sodium) ≤ 0.01 % Pb (Lead) ≤ 0.0005 % Loss on Drying (105°C) ≤ 0.2 % Corresponds to Reag. Ph Eur
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