次氮基三乙酸三钠盐一水合物

Description

Nitrilotriacetic acid, trisodium salt, monohydrate · CAS 18662-53-8 · Na3(C6H6NO6).H2O. UNII J0U92U6NU5. Density: Density (at 25 °C): 1.782 g/cm³; Density: 1.782 @25 °C; Decomposition: 340 °C.

Identification

CAS Registry Number	18662-53-8
PubChem CID	29194
Molecular formula	Na3(C6H6NO6).H2O
IUPAC name	trisodium;2-[bis(carboxylatomethyl)amino]acetate;hydrate
UNII (FDA)	J0U92U6NU5

Computed Descriptors

Molecular Weight	275.10
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	8
Rotatable Bond Count	3
Exact Mass	274.99938444
Monoisotopic Mass	274.99938444
Topological Polar Surface Area	125
Heavy Atom Count	17
Formal Charge	0
Complexity	171

Physical & Chemical Properties

Density	Density (at 25 °C): 1.782 g/cm³
Density	1.782 @25 °C
Decomposition	340 °C

Physical description & handling notes

• Nitrilotriacetic acid trisodium salt monohydrate appears as white crystals or powder with a slight odor of ammonia. pH (1% aqueous solution) about 11. pH (40%) 11-13. (NTP, 1992)
• White solid; [ICSC] White crystalline powder; [Alfa Aesar MSDS]
• WHITE CRYSTALLINE POWDER.
• 770 °F approximately (monohydrate) (NTP, 1992)
• greater than or equal to 100 mg/mL at 70 °F (NTP, 1992)
• Solubility in water, g/100ml at 25 °C: 50 (good)

Regulatory Status

GHS notification summary	4.4% (5 / 114)

GHS Hazard Classification

GHS notification summary	4.4% (5 / 114)
Reported hazard statements	H260 (19.3%), H302 (95.6%), H319 (94.7%), H351 (93.9%), H335, H350, H371

Documented Uses

• Used as a chelating and sequestering agent and builder in synthetic detergents; [NTP]
• Cosmetics product ingredient: Nitrilotriacetic acid, trisodium salt monohydrate (Trisodium NTA)
• Reason for Listing: Listed as a chemical known to cause cancer under Health and Safety Code section 25249.8 of the California Safe Drinking Water and Toxic Enforcement Act of 1986 (Prop 65).
• Potential Health Impacts: Carcinogenicity

Synonyms

18662-53-8; Nitrilotriacetic acid trisodium salt monohydrate; Trisodium nitrilotriacetate monohydrate; NTA sodium hydrate; J0U92U6NU5; Acetic acid, nitrilotri-, trisodium salt, monohydrate; Nitriloacetic acid trisodium salt monohydrate; N,N-Bis(carboxymethyl)glycine trisodium salt monohydrate; Nitrilotriacetic acid, trisodium salt, monohydrate; GLYCINE, N,N-BIS(CARBOXYMETHYL)-, SODIUM SALT, HYDRATE (1:3:1); NTA sodium monohydrate; RefChem:900570; TRILON A92; HAMPSHIRE NTA NA3 CRYSTALS; sodium nitrilotriacetate monohydrate; PERMA KLEER NTA NA3 CRYSTALS

Frequently Asked Questions

What are the CAS number and molecular formula of Nitrilotriacetic acid, trisodium salt, monohydrate?

CAS 18662-53-8; molecular formula Na3(C6H6NO6).H2O; molecular weight — g/mol.

What other names is Nitrilotriacetic acid, trisodium salt, monohydrate known by?

18662-53-8, Nitrilotriacetic acid trisodium salt monohydrate, Trisodium nitrilotriacetate monohydrate, NTA sodium hydrate, J0U92U6NU5, Acetic acid, nitrilotri-, trisodium salt, monohydrate.

Is Nitrilotriacetic acid, trisodium salt, monohydrate classified as hazardous?

4.4% of GHS notifications report no hazard classification (5 of 114).

What are the key physical properties of Nitrilotriacetic acid, trisodium salt, monohydrate?

Density: Density (at 25 °C): 1.782 g/cm³; Density: 1.782 @25 °C; Decomposition: 340 °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.