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Sodium pyrosulfate

Molecular Structure:
Molecular Formula:
Na2S2O7;H2O7S2·2Na
Molecular Weight:
222.10
Alias:
Sodium acid sulfate anhydrous Disulfuric acid, disodium salt
Product order:
Name Specifications Packing Price Delivery
Sodium pyrosulfate AR 500g RMB 27.5 Consulting service
Sodium pyrosulfate CP 500g RMB 22 Consulting service
Character:
白色结晶具吸湿性,溶于水,热至460℃分解。溶于水成硫酸氢钠,溶液呈酸性,溶于发烟硫酸,不溶于乙醇。
密度:2.658
熔点:401℃
Quality Standard:
Q/(HG)SJ 631-94
项目Item                                分析纯      化学纯
                                         (AR)        (CP)
含量(Na2S2O7)Assay,%                   ≥ 96.0       95.0            
澄清度试验Clarty                          合格       合格
水不溶物Insiluble matter in water,%    ≤ 0.005      0.02
氯化物(Cl)Chloride,%                   ≤ 0.001      0.002
磷酸盐(PO4)Phosphate,%                 ≤ 0.001      0.0015
铁(Fe)Iron,%                           ≤ 0.0008     0.001
重金属(以Pb计)Heavy metals,%           ≤ 0.0005     0.002
砷(As)Arsenic,%                        ≤ 0.0001     0.0005
Storage:
密封干燥保存。
酸性熔融剂,熔融矿石。
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