Manufacturer Sodium Acid Pyrophosphate CAS No. 7758-16-9

Product Description

Tetra Sodium Pyrophosphate (TSPP) 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



Tetra Sodium Pyrophosphate (TSPP)
White powder or crystal. The relative density is 2.534, the melting point is 880 ° C, and the boiling point is 938 ° C. Colorless transparent crystal or white crystalline powder. Soluble in water, the solubility in 100g water at 20 ° C is 6.23, its aqueous solution is alkaline; insoluble in alcohol.

Technical Specifications

item	standard
	sodium pyrophosphate anhydrous(Na4P2O7)	sodium pyrophosphosphate decahydrate(Na4P2O7·10H2O)
main content ,≥%	96.5~100.0	98.0
water insoluble,≤%	0.20	0.10
PH value(10g/L, aqueous solution )	9.9~10.7
orth phosphate	pass
Arsenic(As),≤%	0.0003
Heavy Metal(as Pb),≤%	0.001
Fluoride(as F),≤%	0.005
Loss on drying,%	≤0.50	38.0~42.0

 

No.	Specifications	Unit	Food Grade Standard
1	Appearance		White Powder or White Granular
2	Main contents Na4P2O7C	%	≥96.5
3	Phosphate		Qualified
4	Water insoluble matter	%	≤0.2
5	pH of 1% water solution		9.9-10.7
6	Heavy Metal (as Pb)	mg / kg	≤10
7	Plumbum (Pb)	mg / kg	≤4
8	Arsenic (As)	mg / kg	≤0.2
9	Loss on drying	%	≤0.5
10	Fluoride (F)	mg / kg	≤50

 

Industrial Grade Tetra Sodium Pyrophosphate(TSPP)application:.

Totally,mainly used as in industry as detergent auxiliary , paper production to bleach and electroplatingy.It is used for electroplating baths to form complexes together with Fe;For woolen industry as degreasing angent as well as bleaching agent;For Paper industry as decolorizer;For printing and dyeing industry as auxliary agent;For toothpast industry as additive to form colloid together with Dicalcium phosphate;For water treatment industry as water softner;For machanic industry as rust remover.
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