TETRA SODIUM PYROPHOSPHATE (TSPP)

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Guaranteed Technical Specifications

Chemical formula: Na₄P₂O₇
Standard executed: HG/T2968-1988
Throughput: 5000t/a

Properties

White powder, easily soluble in water, density at 2.45, melting point at 890℃, its water solution is alkaline, PH value in 1% solution is 9.9~10.7

Uses

Mainly used as detergent in washing, bleach in paper-making, and electroplating, etc. For food grade it is mainly used as food additive, buffering agent, emulsification agent, and nourishment, and modifying agent, etc.

Packing and storage

Plastic-woven sack with polythene inner bag, net weight at 25kg, 50kg or 1000kg. Store at a ventilated, dry place.

Other Parameters

序号 No	指标名称 Specifications	工业级 Industrial grade	食品级 Food grade
1	主含量（以Na4P2O7计）%≥ Main contents	96.5	96.5
2	五氧化二磷（以P2O5计）%≥ Phosphorus pentoxide	51.50	51.50
3	正磷酸盐 Phosphate	符合检验 Qualified	符合检验 Qualified
4	PH值（1%水溶液） PH value of 1% solution	9.9—10.7	9.9-10.7
5	细度（通过60目筛）%≥ Fineness (through 60 mesh)	90	90
6	重金属（以Pb计）%≤ Heavy metals, as Pb		0.001
7	砷（以As计）%≤ Arsenic, as As		0.0003
8	氟化物（以F计）%≤ Fluoride as F		0.005
9	水不溶物%≤ Water insoluble	0.10	0.10

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