CAS NO: 7722-88-5
Molecular Weight: 265.9 
EC NO: 231-767-1
Formula: Na₄P₂O₇
InChI: InChI=1/4Na.H4O7P2/c;;;;1-8(2,3)7-9(4,5)6/h;;;;(H2,1,2,3)(H2,4,5,6)/q4*+1;/p-4

Product description:
English name: sodium pyrophosphate；Tetra-Sodium pyrophosphate decahydrate; TSPP decahydrate;Sodium pyrophosphate decahydrate
Alias: Sodium pyrophosphate; Tetrasodium pyrophosphate; TSPP; Tetra Sodium Pyrophosphate; Tetrasodium Diphosohate
Appearance: white powder or crystal
Chemical formula: Na₄P₂O₇
Molecular Weight: 265.9
CAS No.: 7722-88-5
EINECS No.: 231-767-1
H.S CODE:28353990
Properties
White powder or crystal. Relative density 2.534, melting point 880℃, boiling point 93.8℃, specific gravity 2.534. Colorless transparent crystal or white crystalline powder. Easily soluble in water, insoluble in alcohol.
Uses:
　This product can be used in preparing electroplate liquid in electroplating industry; as wool degreasing agent in textile industry; in bleaching paper and plant fiber in paper industry; as toothpaste additive in daily chemical industry; in water treatment as softener; in chemical production as dispersing agent and emulsifier. Moreover, it can also be used in food industry as quality improver, emulsifier, buffer agent, chelating agent, etc.
IV. Packing          
Laminated plastic woven bag lined with plastic film bag, net weight 10kg, 20kg, 25kg/bag, export product is according to the requirement of foreign merchant。
Alias:Sodium pyrophosphate; Tetrasodium pyrophosphate; TSPP; Tetra Sodium Pyrophosphate; Tetrasodium Diphosohate
Structural formula: