سدیم بوروهیدرید مرک اصل المان Sodium borohydride Sodium borohydride for analysis Synonyms: Sodium tetrahydridoborate Product Information CAS number 16940-66-2 EC number 241-004-4 Hill Formula H₄BNa Chemical formula NaBH₄ Molar Mass 37.83 g/mol HS Code 2850 00 90 Physicochemical Information Boiling point 500 °C (decomposition) Density 1.07 g/cm3 (20 °C) Explosion limit 3.02 %(V) Flash point 69 °C not applicable Ignition temperature 220 °C Melting Point >360 °C (slow decomposition) pH value 11 (10 g/l, H₂O, 20 °C) Vapor pressure <1 hPa (25 °C) Bulk density 350 - 500 kg/m3 The purity percentage of 106371 sodium borohydride from Sigma-Aldrich is at least 96.0%,