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1-Hydroxy Ethylidene-1,1-Diphosphonic Acid Tetrasodium Salt (Powder)

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Product Description

PRODUCT

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid Tetrasodium Salt (Powder)

CAS #

3794-83-0

SYNONYM

HEDP•Na4; Phosphonic acid, P,P'-(1-hydroxyethylidene)bis-, sodium salt (1:4); Tetrasodium (1-hydroxyethylidene)bisphosphonate

FORMULA

C2H4O7P2Na4

PRODUCT TYPE

Organic

Product Specifications

APPEARANCE

White Powder

ACTIVE COMPONENT (HEDP)

>= 56.0%

ACTIVE COMPONENT (HEDP NA4)

>= 79.9%

PHOSPHORIC ACID

52.0 - 54.0%

FE

<= 35.0 ppm

LOSS ON DRYING

<= 15 % (20C)

PH

11.0 - 12.0 (1% solution)

MELTING POINT

-5 c

MOLECULAR WEIGHT

293.96

SPECIFIC GRAVITY

1.30-1.35

NOTES

HEDP Na4 has a broad range of applications and is useful in very cold conditions. It can be used in oxide dissolving on metal surfaces and has good scale and corrosion inhibition effects under 250C.


 

Use: CHELATING, EMULSION STABILISING, VISCOSITY CONTROLLING

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