product details

Beijing KangPuHuiWei Technology Co.,Ltd.

Sodium thiosulfate

Author：admin Time：2019-01-04 09:39:00

Sodium thiosulfate pentahydrate Na2S2O3·5H2O

Relative molecular Weight:248.18

Properties: Colorless crystals or whitegranules,to weathering or deliquescence.The relative density is 1.69, themelting point is 48.45 ° C, 100 ° C loss of crystal water. Dissolved in water, slightly soluble inethanol. it is also reductive.

Product standard number:GB/T 673-2006

Specifications: Content and content of impurities in %

Test Items	AR	CP
Content	99.0	98.5
Clarity test	Qualified	Qualified
Water insoluble matter	0.005	0.01
Chloride（Cl）	0.02
Sulfate and sulphite（以SO4计）	0.05	0.1
Sulfide（S）	0.00025	0.0005
Total nitrogen content（N）	0.005
Magnesium （Mg）	0.001
Calcium（Ca）	0.003	0.005
Iron（Fe）	0.0005	0.001
Heavy metals（以Pb计）	0.0005	0.001

Usage:It can be use as analysis ofreagents,such as a redox titrant, a reducing agent, a mordant, a fixer.alsoused for CRT production.

Analysis of pure soda AR Grade

Next：Ammonium sulfate