中文名磷酸氢二钠英文名sodium hydrogen phosphate别名磷酸二钠磷酸氢二钠无水磷酸氢二钠二盐基性磷酸钠磷酸氢二钠无水磷酸二钠(无水)磷酸氢二钠,无水磷酸氢二钠(无水)磷酸氢二钠无水颗粒磷酸氢二钠(食用级)磷酸氢二钠PH标准物质英文别名DSPsoda phosphateDisodium PhosphateDi-Sodium PhosphateSodium acid phosphateDisodium Monophosphatedisodium orthophosphateSodium Phosphate Dibasicdibasic sodium phosphateSodium phosphate,dibasicdisodium phosphoric acidsodium hydrogen phosphatedi-Sodium HydrogenphosphateDisodium hydrogen phosphateSodium monohydrogen phosphatePhosphoric acid, disodium saltDisodium Hydrogenorthophosphatedisodium monohydrogen phosphateDIBASICSODIUMPHOSPHATE,DRIED,USPsodium phosphate dibasic solutiondi-sodium hydrogen orthophosphateDisodium hydrogen phosphate,edibleDisodium Monohydrogen OrthophoshateSodium Phosphate, Dibasic AnhydrousDisodium hydrogen phosphate anhydrousSODIUM PHOSPHATE, DIBASIC BIO-REFINEDSODIUM PHOSPHATE REAGENT GRADE DIBASICsodium hydrogen phosphate, anhydrous, acsSODIUMPHOSPHATE,DIBASIC,ANHYDROUS,BIOTECHGRADESODIUM PHOSPHATE, DIBASIC ANHYDROUS, TECHNICALbuffer solution from di-sodium hydrogen phosphateCAS7558-79-4EINECS231-448-7化学式H4NaO4P分子量121.99InChIInChI=1/2Na.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2InChIKeyBNIILDVGGAEEIG-UHFFFAOYSA-L密度1.064g/mLat 20°C熔点243-245 °C水溶性>=10 g/100 mL at 20 ºC蒸汽压0Pa at 20℃蒸汽密度4.9 (vs air)溶解度H2O: 0.5M at20°C, clear, colorless酸度系数(1) 2.15, (2) 6.82, (3) 12.38 (at 25℃)PH值8.9-9.2 (25℃, 50g/L in water)存储条件Store at +5°C to +30°C.稳定性Stable. Incompatible with strong acids. Hygroscopic.敏感性Hygroscopic外观powder颜色White最大波长(λmax)['λ: 260 nm Amax: 0.019',, 'λ: 280 nm Amax: 0.016']Merck14,8659物化性质白色粉末、片状或粒状物。 易溶于水,其水溶液呈碱性;不溶于醇。MDL号MFCD00003496