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磷酸氢二钠

英文名: disodium hydrogenphosphate

CAS: 7558-79-4      分子式: HNa2O4P

分子量: 141.95900

别名:


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描述

Sodium dihydrogen phosphate, sodium dihydrogen phosphate, sodium hydrogen phosphate, chemical formula Na2HPO4, is one of the sodium tribasic produced by phosphoric acid. It is easily hygroscopic white powder, soluble in water, water solution is weak alkaline. Sodium dihydrogen phosphate is used as an additive in water softener and food industry. It has a lot of hydrate: Anhydrous-na2hpo4 Water-na2hpo4 2H2O Seven water-na2hpo4 7H2O 12 water Objects-na2hpo4 12H2O It can be made from sodium hydroxide and phosphoric acid in a fixed metering ratio and generated: 2NaOH + H3po4→na2hpo4 + 2H2O It is ℃ above 240 and decomposed into sodium pyrophosphate.

基本信息
英文名:
disodium hydrogenphosphate
CAS号.:
7558-79-4
别名:
Disodium hydrogenorthophosphate; disodium,hydrogen phosphate;
分子式:
HNa2O4P
分子量:
141.95900
PSA:
93.23000
LogP:
物化属性
外观:
White granular powder.
密度:
1.064 g/mL at 20 °C
熔点:
243-245 °C
沸点:
158ºC at 760 mmHg
闪点:
储存条件:
Store at RT.
安全信息
海关编码:
2835220000
WGK Germany:
3
危险类别码:
R36/37/38
安全说明:
S26-S36-S24/25
危险品标志:
Xi
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