Etidronic Acid CAS#2809-21-4

CAS Number: 2809-21-4
Chemical Formula: C2H8O7P2
Synonyms:

ETHANE-1-HYDROXY-1,1-DIPHOSPHONIC ACID, 95+%
(1-Hydroxyethylidene)biphosphonic acid
1-HYDROXYETHYLIDENE-1,1-DIPHOSPHONIC ACID, 98% HEDP

Appearance: White Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Produktdetails

Etidronic Acid CAS#2809-21-4

Hydroxyethylidene diphosphonic acid (HEDP) is a new type of chlorine-free electroplating complexing agent. It is used as the main agent for stable water quality in the circulating cooling water system, and plays the role of corrosion and scale inhibition. This product is one of the organic polyphosphonic acid-free water tablet conditioners. There are also some other varieties of such products produced in China, such as aminotrimethylenephosphonic acid (ATMP): [CH2PO(OH)2]3N and ethyl acetate Diaminetetramethylenephosphoric acid (EDTMP) and so on. Organic polyphosphonic acid is a type of water treatment agent developed in the late 1960s and confirmed around the 1970s.

Etidronic Acid Chemical Properties

Melting point	198~199℃
Boiling point	578.8±60.0 °C(Predicted)
density	1.45 (60% aq.)
vapor pressure	0Pa at 25℃
storage temp.	Sealed in dry,Room Temperature
solubility	Methanol (Slightly), Water (Slightly)
pka	1.35, 2.87, 7.03, 11.3(at 25℃)
form	Powder
color	white
PH	pH (1.7→100, 25℃) : 1.3～1.8
Water Solubility	Soluble in water.
Merck	14,3863
BRN	1789291
Stability:	Stable. Incompatible with strong oxidizing agents.
Cosmetics Ingredients Functions	CHELATING
Cosmetic Ingredient Review (CIR)	Etidronic Acid (2809-21-4)
InChI	1S/C2H8O7P2/c1-2(3,10(4,5)6)11(7,8)9/h3H,1H3,(H2,4,5,6)(H2,7,8,9)
InChIKey	DBVJJBKOTRCVKF-UHFFFAOYSA-N
SMILES	CC(O)(P(O)(O)=O)P(O)(O)=O
LogP	-3.5
CAS DataBase Reference	2809-21-4(CAS DataBase Reference)
EPA Substance Registry System	Etidronic acid (2809-21-4)

Safety Information

Hazard Codes	Xi,Xn
Risk Statements	37/38-41-22
Safety Statements	26-39
RIDADR	UN 3265
WGK Germany	2
RTECS	SZ8562100
F	10
TSCA	TSCA listed
HazardClass	8
PackingGroup	II
HS Code	29319090
Storage Class	8A - Combustible corrosive hazardous materials
Hazard Classifications	Eye Dam. 1 Met. Corr. 1
Hazardous Substances Data	2809-21-4(Hazardous Substances Data)
Toxicity	LD50 oral in mouse: 1800mg/kg

Product Application Of Etidronic Acid CAS#2809-21-4

1-Hydroxyethylidenebis(phosphonic acid) acts as human protein tyrosine phosphatase inhibitor. It is also useful for photographic applications. It finds application to strengthen bone, osteoporosis treatment and to treat Paget's disease of bone. In addition, it is used in corrosion inhibition in circulating cool water systems, oil fields and low-pressure boilers with electric power, the chemical industry, metallurgy and fertilizers. It is also utilized for formulating reverse osmosis and thermal desalination anti-scaling agents. Furthermore, it is used in detergents, water treatment, cosmetics and pharmaceuticals.

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