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Sodium pyrophosphate

Cas:
7722-88-5
Molecular Structure:
Molecular Formula:
Na4P2O7
Molecular Weight:
446.06
Alias:
二磷酸四钠,焦磷酸四钠 Sodium pyrophosphate tetrabasic Tetrasodium pyrophosphate Sodium pyrophosphate Pyrophosphate inorganic Sodium diphosphate tetrabasic TSPP
Product order:
Name Specifications Packing Price Delivery
Sodium pyrophosphate ACS 500g RMB 96.8 Consulting service
Sodium pyrophosphate CP 500g RMB 38.5 Consulting service
Sodium pyrophosphate AR 500g RMB 41.8 Consulting service
Character:
无色透明结晶或白色结晶性粉末。在干燥空气中风化。在100℃失去结晶水。能溶于水,不溶于醇。水溶液呈碱性。在空气中易吸收水份而潮解。
熔点:80℃
沸点:93.8℃
密度:1.82
Quality Standard:
   
   项目Item                                 分析纯     化学纯
                                          (AR)      (CP)
含量Assay,%                              ≥99.0       97.0  
水溶液反应Water solution reaction         合格       合格
澄清度试验Clarty                          合格       合格
水不溶物Insiluble matter in water,%     ≤0.005      0.01
氯化物(Cl)Chloride,%                    ≤0.001      0.003
硫酸盐(SO4)Sulfate,%                    ≤0.025      0.05
磷酸盐(PO4)Phosphate,%                  ≤0.3        0.3
铁(Fe)Iron,%                            ≤0.001      0.002
重金属(以Pb计)Heavy metals,%            ≤0.001      0.002
砷(As)Arsenic,%                         ≤0.00005    0.0002

ACS级
项目名称                                          ACS Grade
含量Assay                                          ≥99.0-103.0%
pH(5%,25.0℃)pH of a 5% solution at 25.0℃          9.5-10.5
水不溶物Insoluble matter                           ≤0.01%
氯化物(Cl)Chloride                                 ≤0.002%
硫酸盐(SO4)Sulfate                                 ≤0.005%
氮化合物(以N计)Nitrogen compounds                  ≤0.001%
 

Storage:
密封保存。
用途  软水剂,除锈剂、金属电解分析、分散及乳化剂。
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