1-Hydroxyethylidene-1,1-diphosphonic acid CAS 2809-21-4

Basic Info

CAS No.:	2809-21-4
MF:	C2H8O7P2
Place of Origin:	Shandong, China
Purity:	98%min
Model Number:	WX01-CAS 2809-21-4
Appearance:	White Crystalline powder
CAS:	2809-21-4
Melting Point:	198~199℃
Package:	25kg / 200kg/ Drum
Brand:	ZHISHANG
Samples:	Availale

Other Names:	98% HEDP
EINECS No.:	220-552-8
Type:	Syntheses Material Intermediates
Brand Name:	ZHISHANG CHEM
Application:	Syntheses Material Intermediates
Product name:	1-Hydroxyethylidene-1, 1-Diphosphonic Acid
Color:	White Crystalline powder
Density:	1.2166 (rough estimate)
Boiling point:	578.8±60.0 °C(Predicted)
Usage:	Syntheses Material Intermediates

Application:

It is commonly used as scale and corrosion inhibitor in boiler water, circulating water and oil field water injection treatment. It is often combined with polyhydroxyl acid scale inhibitor and dispersant. It can also be used as cyanide-free complexing agent for electroplating, fixing agent for bleaching and dyeing industry, and hydrogen peroxide stabilizer.

Phosphorylation reagent for protected serine and pyranose.

This product is the main material for cyanide-free electroplating. The cyanide-free electroplating copper solution was prepared, and the direct electroplating copper layer on sodium iron had good adhesion. The coating is smooth and the color is good

Specification:

ITEM	SPECIFICATION
APPEARANCE	COLORLESS TO LIGHT YELLOW TRANSPARENT LIQUID
ACTIVE CONTENT (AS HEDP) %	60.0-62.0
PHOSPHOROUS ACID (AS PO33-) %	2.5 MAX
PHOSPHORIC ACID (AS PO43-)%	0.7 MAX
PH (1% WATER SOLUTION)	2.0 MAX
DENSITY (20 ℃) g/cm3	1.44-1.47
IRON ppm	10 MAX
CHLORIDES (AS CL-) ppm	100 MAX
COLOR (APHA)	30 MAX
SEQUESTRANT VALUE (CACO3)m	500 MIN

Service

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After-Sales Service

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Shipping

1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.