三偏磷酸钠(STMP)
Sodium trimetaphosphate
分子式:(NaPO3)3
Molecular formula:(NaPO3)3
分子量:305.92
Molecular weight:305.92
特性:三偏磷酸钠是白色结晶或结晶粉末,密度2.54,30℃以上在水中溶解度大于30%,35℃以上无稳定的水合物。
Physical and Chemical property:White crystal or crystal powder. Density is 2.54g/cm3. The solubility in water above 30℃is more than 30%, and no stable hydrate above 35℃.
执行标准:HG2923-1999
Executive standard:HG2923-1999
技术指标
Technical indexes
序号S/N |
指标名称 Specifications |
指标 Index |
1 |
三偏磷酸钠(以P2O5计)含量,% sodiumtrimetaphosphateas P2O5 |
≥ 68.0-70.0
|
2 |
砷(As)含量,% As |
≤ 0.0003 |
3 |
重金属(以Pb计)含量,%
|
≤ 0.001 |
4 |
氯化物(以CL计)含量,% Chloride(as CL) |
≤0.005 |
5 |
不溶物含量,% insoluble matter,% |
≤0.1 |
6 |
PH值(1%溶液) PH value |
6.0-9.0 |
7 |
外观 Appearance |
白色结晶 White crystal |
Use:Used in water treatment, component of detergent.
包装及贮存:内塑外编袋,两层内袋,每袋净重25kg或50kg,贮于通风干燥处。Packaging and Storage:Plastic knit bag and two-tier inside bag. It is stored in ventilated and dry place.
Net weight: 25Kg or 50 Kg.
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