亚氨基二乙酸

Description

Iminodiacetic Acid · CAS 142-73-4 · C4H7NO4. UNII XQM2L81M8Z. Melting Point: 247.50 °C. @ 760.00 mm Hg; Dissociation Constants: PKA1: 2.98; PKA2: 9.89; Other Experimental Properties: 220-250 °C (COMMERCIAL).

Identification

CAS Registry Number	142-73-4
PubChem CID	8897
Molecular formula	C4H7NO4
IUPAC name	2-(carboxymethylamino)acetic acid
UNII (FDA)	XQM2L81M8Z

Computed Descriptors

Molecular Weight	133.10
XLogP3	-3.3
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	4
Exact Mass	133.03750770
Monoisotopic Mass	133.03750770
Topological Polar Surface Area	86.6
Heavy Atom Count	9
Formal Charge	0

Physical & Chemical Properties

Melting Point	247.50 °C. @ 760.00 mm Hg
Dissociation Constants	PKA1: 2.98; PKA2: 9.89
Other Experimental Properties	220-250 °C (COMMERCIAL)
Other Experimental Properties	DECOMP @ 247.5 °C

Physical description & handling notes

• Dry Powder
• Solid; [Merck Index] Light brown crystalline solid; [MSDSonline]
• Solid
• ORTHORHOMBIC CRYSTALS
• PRACTICALLY INSOL IN ACETONE, METHANOL, ETHER, BENZENE, CARBON TETRACHLORIDE, HEPTANE; SOL IN WATER @ 5 °C: 2.43 G/100 ML
• FORMS SALTS WITH ACIDS & BASES

Regulatory Status

GHS notification summary	20.1% (55 / 274)

GHS Hazard Classification

GHS notification summary	20.1% (55 / 274)
Reported hazard statements	H315 (56.9%), H319 (58%), H335 (56.6%), H412 (22.3%)

Documented Uses

• Used as a buffer/sequestrant in electroplating applications and to make surfactants, chelating resins, and polymeric amides; Used as IDA, a chelating agent; [HSDB]
• Electroplating [Category: Plate]
• HAS BEEN SUGGESTED AS INTERMEDIATE IN MFR OF COMPLEX SALTS, CHELATING AGENTS
• CHEM INT FOR SURFACTANTS, CHELATING RESINS, POLYMERIC AMIDES; BUFFER/SEQUESTRANT IN ELECTROPLATING APPLICATIONS
• HYDROGENATION OF NITRILOTRIACETIC ACID IN PRESENCE OF PALLADIUM/CARBON CATALYST; AMMONOLYSIS OF CHLOROACETIC ACID
• OBTAINED FROM NITRILOTRIACETIC ACID...BY HCL-HYDROLYSIS IN BOMB TUBE: SCHWARZENBACH ET AL, HELV CHIM ACTA 28, 1133 (1945); BY OXYGENATION IN PRESENCE OF PALLADIUM/CARBON CATALYST: TETENBAUM, STONE, CHEM COMMUN 1970, 1699. IMINODIACETIC ACID & NITRILOTRIACETIC ACID ARE FORMED UPON BOILING CHLOROACETIC ACID WITH CONCN AQ AMMONIA: HEINTZ, ANN 149, 88 (1869)

Synonyms

IMINODIACETIC ACID; 142-73-4; Iminodiethanoic acid; 2,2'-Iminodiacetic acid; Aminodiacetic acid; Diglycin; Diglykokoll; N-(Carboxymethyl)glycine; Glycine, N-(carboxymethyl)-; Diglycocoll; Hampshire; Iminobis(acetic acid); Acetic acid, iminodi-; IMDA; 2-[(carboxymethyl)amino]acetic acid; USAF DO-55

Frequently Asked Questions

What are the CAS number and molecular formula of Iminodiacetic Acid?

CAS 142-73-4; molecular formula C4H7NO4; molecular weight — g/mol.

What other names is Iminodiacetic Acid known by?

IMINODIACETIC ACID, 142-73-4, Iminodiethanoic acid, 2,2'-Iminodiacetic acid, Aminodiacetic acid, Diglycin.

Is Iminodiacetic Acid classified as hazardous?

20.1% of GHS notifications report no hazard classification (55 of 274).

What are the key physical properties of Iminodiacetic Acid?

Melting Point: 247.50 °C. @ 760.00 mm Hg; Dissociation Constants: PKA1: 2.98; PKA2: 9.89; Other Experimental Properties: 220-250 °C (COMMERCIAL); Other Experimental Properties: DECOMP @ 247.5 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.