四甲基氯化铵

Description

Tetramethylammonium chloride · CAS 75-57-0 · C4H12N.Cl. UNII DCQ9S88703. Melting Point: 420 °C (decomposes); Melting Point: MP: >300 °C; Density: 1.1690 at 20 °C/4 °C.

Identification

CAS Registry Number	75-57-0
PubChem CID	6379
Molecular formula	C4H12N.Cl
IUPAC name	tetramethylazanium chloride
UNII (FDA)	DCQ9S88703

Computed Descriptors

Molecular Weight	109.60
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	109.0658271
Monoisotopic Mass	109.0658271
Topological Polar Surface Area	0
Heavy Atom Count	6
Formal Charge	0
Complexity	19.1

Physical & Chemical Properties

Melting Point	420 °C (decomposes)
Melting Point	MP: >300 °C
Density	1.1690 at 20 °C/4 °C
Density	1.17 g/cm³
Vapor Pressure	0.00000001 [mmHg]
Decomposition	368-370 °C

Physical description & handling notes

• CBI; Liquid
• White hygroscopic solid; [ICSC] White odorless powder; Hygroscopic; [Alfa Aesar MSDS]
• HYGROSCOPIC WHITE CRYSTALS.
• Bipyramidal from dilute alcohol
• White crystalline solid
• MP: Decomposes

Regulatory Status

Regulatory & Food Contact	CIR / INCI: Viscosity controlling
GHS notification summary	19.3% (55 / 285)

GHS Hazard Classification

GHS notification summary	19.3% (55 / 285)
Reported hazard statements	H300 (67%), H301 (13.7%), H311 (68.4%), H315 (69.8%), H319 (20.7%), H335 (19.6%), H370 (49.5%), H411 (49.5%)

Documented Uses

• Used as a clay stabilizer in hydraulic fracturing fluids, as a chemical intermediate, catalyst, and inhibitor; [HSDB]
• Petroleum Production and Refining [Category: Industry]
• Both oil base and water base fracturing fluids are being used in the fracturing industry. Water base, which includes alcohol-water mixtures and low strength acids, make up the majority of treating fluids. The common chemicals added to these fluids are polymers for viscosity development, crosslinkers for viscosity enhancement, pH control chemicals, gel breakers for polymer degradation following the treatment, surfactants, clay stabilizers, alcohol, bactericides, fluid loss additives and friction reducer. /Hydraulic
• Hydraulic fracturing uses a specially blended liquid which is pumped into a well under extreme pressure causing cracks in rock formations underground. These cracks in the rock then allow oil and natural gas to flow, increasing resource production. ... Chemical Name: Tetramethyl ammonium chloride; Chemical Purpose: Prevents clays from swelling or shifting; Product Function: Clay stabilizer.
• Chemical intermediate, catalyst, inhibitor.
• Cosmetics -> Viscosity controlling

Synonyms

TETRAMETHYLAMMONIUM CHLORIDE; 75-57-0; Tetramine chloride; N,N,N-Trimethylmethanaminium chloride; Methanaminium, N,N,N-trimethyl-, chloride; TMAC; Ammonium, tetramethyl-, chloride; DTXSID6021749; DCQ9S88703; tetramethylammonium;chloride; Methanaminium, N,N,N-trimethyl-, chloride (1:1); DTXCID301749; RefChem:188765; 200-880-8; Tetramethyl ammonium chloride; USAF AN-8

Frequently Asked Questions

What are the CAS number and molecular formula of Tetramethylammonium chloride?

CAS 75-57-0; molecular formula C4H12N.Cl; molecular weight — g/mol.

What other names is Tetramethylammonium chloride known by?

TETRAMETHYLAMMONIUM CHLORIDE, 75-57-0, Tetramine chloride, N,N,N-Trimethylmethanaminium chloride, Methanaminium, N,N,N-trimethyl-, chloride, TMAC.

What is the regulatory status of Tetramethylammonium chloride?

Documented regulatory listings: CIR / INCI: Viscosity controlling.

Is Tetramethylammonium chloride classified as hazardous?

19.3% of GHS notifications report no hazard classification (55 of 285).

What are the key physical properties of Tetramethylammonium chloride?

Melting Point: 420 °C (decomposes); Melting Point: MP: >300 °C; Density: 1.1690 at 20 °C/4 °C; Density: 1.17 g/cm³.

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.