Trimethylphenylammonium hydroxide

TMAH · TMPAH · TRIMETHYLPHENYLAMMONIUM HYDROXIDE · N,N,N-trimethylanilinium hydroxide · PTAH · BT227500 · methelute · 0.1MinMethanol

https://huagongshe.com/en/chemical/15913

Trimethylphenylammonium hydroxide molecular structure

Identifiers & Physical Properties

CAS No.	1899-02-1
Molecular formula	C9H15NO
Average molar mass	153.22 g/mol
Monoisotopic mass	153.1153641 g/mol
SMILES	C[N+](C)(C)c1ccccc1.[OH-]
InChIKey	HADKRTWCOYPCPH-UHFFFAOYSA-M
PubChem CID	15913
ChEBI	CHEBI:85062
EC No.	217-592-3
DTXSID	DTXSID50883769

Chemical & Physical Properties

Topological polar surface area	1
Hydrogen bond donors	1
Hydrogen bond acceptors	1
Rotatable bonds	1
Heavy atoms	11
Formal charge	0
Complexity	95
Physical Description	20-30% Aqueous solution: Clear colorless liquid[Sigma-Aldrich MSDS]
Boiling point	65 °C
Refractive index	n20/D 1.395
Flash point	10 °C
Storage conditions	2-8°C
Physical state	Liquid
Color	Clear colorless
BRN	3917033
InChI	1S/C9H14N.H2O/c1-10(2,3)9-7-5-4-6-8-9/h4-8H,1-3H31H2/q+1/p-1
InChIKey	HADKRTWCOYPCPH-UHFFFAOYSA-M
SMILES	[OH-].C[N+](C)(C)c1ccccc1
CAS DataBase Reference	1899-02-1(CAS DataBase Reference)
EPA Substance Registry System	Benzenaminium, N,N,N-trimethyl-, hydroxide (1899-02-1)
UNSPSC Code	12352005
NACRES	NA.22
GHS pictogram	GHS05
Signal word	Danger
GHS hazard statements	H314
GHS precautionary statements	P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363
Personal protective equipment (PPE)	Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
Hazard symbols	C,T,F
Risk statements (R)	34-39/23/24/25-36/38-23/24/25-11
Safety statements (S)	26-36/37/39-45-36/37-16
UN transport number	UN 3267 8/PG 2
Water hazard class (WGK)	1
RTECS number	BT2275000
F	10-4.4-34
TSCA inventory status	TSCA listed
Customs code	29239000
Storage class	8A - Combustible corrosive hazardous materials
Hazard class	Eye Dam. 1Skin Corr. 1B

Safety & Regulations

GHS classification	DangerH314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]P260, P264, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 40 reports by companies from 2 notifications to the ECHA C&L Inventory.Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Hazards summary	20-30% Aqueous solution: Causes burnsInhalation may cause corrosive injuries to upper respiratory tract and lungs[Sigma-Aldrich MSDS]
Hazard Classes and Categories	Skin Corr. 1B (100%)
Adverse effects	Dermatotoxin - Skin burns.Toxic Pneumonitis - Inflammation of the lungs induced by inhalation of metal fumes or toxic gases and vapors.
F	10-4.4-34
Personal protective equipment (PPE)	Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
Water hazard class (WGK)	1
TSCA inventory status	TSCA listed
RTECS number	BT2275000
UN transport number	UN 3267 8/PG 2
Customs code	29239000
Risk statements (R)	34-39/23/24/25-36/38-23/24/25-11
Signal word	Danger
GHS pictogram	GHS05
Hazard symbols	C,T,F

Applications & Uses

Uses

Trimethylanilinium hydroxide is the most common reagent in this type of organic ammonium salts.Other reagents used are tetramethylammonium hydroxide and m-(trifluoromethylphenyl)trimethylammonium hydroxide. the acetate salt and fluoride salt have also been reported.

Uses

Learn more in the Product Information

General Description

Trimethylphenylammonium hydroxide (TMAH) is a methylating reagent.