5995-42-6

Basic information

• Product Name: [[(2-hydroxyethyl)imino]bis(methylene)]bisphosphonic acid
• Synonyms: [[(2-hydroxyethyl)imino]bis(methylene)]bisphosphonic acid;Phosphonic acid, (2-hydroxyethyl)iminobis(methylene)bis-;ethanolaminedi(methylenephosphonic acid);2-[Bis(phosphonomethyl)amino]ethanol;2-Hydroxyethylbis(phosphonomethyl)amine;2-Hydroxyethyliminobis(methylene phosphonic acid);2-Hydroxyethyliminodimethanephosphonic acid;Einecs 227-833-4
• CAS NO: 5995-42-6
• Molecular Formula: C4H13NO7P2
• Molecular Weight: 249.096042
• EINECS: 227-833-4
• Product Categories: Water treatment
• Mol File: 5995-42-6.mol
• Article Data: 7

Chemical Properties

• Boiling Point: 612.637 °C at 760 mmHg
• Flash Point: 324.312 °C
• Appearance: /
• Density: 1.81 g/cm³
• Vapor Pressure: 1.43E-17mmHg at 25°C
• Refractive Index: 1.578
• CAS DataBase Reference: [[(2-hydroxyethyl)imino]bis(methylene)]bisphosphonic acid(CAS DataBase Reference)
• NIST Chemistry Reference: [[(2-hydroxyethyl)imino]bis(methylene)]bisphosphonic acid(5995-42-6)
• EPA Substance Registry System: [[(2-hydroxyethyl)imino]bis(methylene)]bisphosphonic acid(5995-42-6)

Safety Data

• Hazardous Substances Data: 5995-42-6(Hazardous Substances Data)

Usage

General Description

The chemical compound [(2-hydroxyethyl)imino]bis(methylene)]bisphosphonic acid, also known as HEDP, is a widely used organic compound in various industrial applications. It is a colorless, odorless liquid that is soluble in water. HEDP is commonly used as a chelating agent and scale inhibitor in the production of detergents, water treatment, and metal treatment processes. It is also used as a corrosion inhibitor in various industries, such as oil and gas, and in the production of personal care products. HEDP is known for its ability to effectively sequester metal ions and prevent the formation of scale and corrosion in water systems. It is considered safe for use in these applications and is regulated by various environmental agencies for its use.

InChI:InChI=1/C4H13NO7P2/c6-2-1-5(3-13(7,8)9)4-14(10,11)12/h6H,1-4H2,(H2,7,8,9)(H2,10,11,12)

Upstream product

• 17261-34-6 (iminobismethylene)bisphosphonic acid 
• 107-07-3 2-chloro-ethanol 
• 50-00-0 formaldehyd 
• 141-43-5 ethanolamine 
• 57441-12-0 2-chloroethylamine-N,N-bis(methylenephosphonic acid) 
• 56-40-6 glycine 
• 302-72-7 rac-Ala-OH 
• 52-90-4 L-Cysteine 
• 68-11-1 mercaptoacetic acid 
• 124-02-7 diallylamine 
• 107-10-8 propylamine 
• 2617-47-2 hydroxymethylphosphonic acid 
• 2002-24-6 2-amino-ethanol hydrochloride 

Relevant articles and documents

MOLECULAR STRUCTURE OF 4-(PHOSPHONOMETHYL)-2-HYDROXY-2-OXO-1,4,2-OXAZAPHOSPHORINANE

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Intramolecular cyclization of 1,3-diamino-2-hydroxypropan-N,N,ń,ń-tetrakis(methylphosphonic acid) upon phosphonomethylation of 1,3-diaminopropan-2-ol

Phosphonomethylation of 1,3-diaminopropan-2-ol affords the mixture of 1,3-diamino-2-hydroxypropan-N,N,ń,ń-tetrakis(methylphosphonic acid) (1) with its cyclic ether, viz., [(6-[bis(phosphonomethyl)amino]methyl-2-hydroxy-2-oxido-1,4,2-oxazaphosphinan-4-yl)methyl]phosphonic acid (2), but not 1, as assumed earlier.

Phosphonate compounds

Novel phosphonate compounds are disclosed embodying an aminophosphonate moiety and a selected reaction partner. These compounds offer beneficial alternatives, and additional possibilities, to extant phosphonates and are capable of delivering desirable benefits from an application standpoint and from a compatibility standpoint broadly.

PHOSPHONOMETHYLATION OF AMINOALKANOLS PREPARATION OF 4-(PHOSPHONOMETHYL)-2-HYDROXY-2-OXO-1,4,2-OXAZAPHOSPHORINANES

Treatment of aminoalkanols 1 with phosphorous acid and formaldehyde in presence of conc. hydrochloric acid gave mixtures of dimethylene diphosphonic acids 3 and 4-(phosphonomethyl)-2-hydroxy-2-oxo-1,4,2-oxazaphosphorinanes 2 from which 2 were isolated as crystalline solids.Similiar treatment of 2-amino-2-methyl-1,3-propanediol 8 gave a complex mixture from which dimethylene diphosphonic acid of 5-amino-5-methyl-1,3-dioxane 9 was isolated. 2-Amino-ethanediol, when subjected to phosphonomethylation, gave an unexpected novel quarternary nitrogen product 11.N-Alkylaminoalkanols 4 on phosphonomethylation gave 3:1 mixtures of methane phosphonic acid 6 and N-alkyl-2-hydroxy-2-oxo-1,4,2-oxazaphosphorinane 5.Treatment of the crude mixtures of 5 and 6 with aqueous sodium hydroxide gave disodium salts of methanephosphonic acid 7.The ratio of the cyclic to the open chain structures obtained as well as the formation of any unexpected novel products is dependent on the structure of the aminoalkanol that is phosphonomethylated.The 1H, 13C and 31P spectra are reported for all new compounds.