Tetramethylammonium hydroxide

Modify Date: 2026-06-29 19:19:28

Tetramethylammonium hydroxide Structure
Tetramethylammonium hydroxide structure
Common Name Tetramethylammonium hydroxide
CAS Number 75-59-2 Molecular Weight 91.152
Density 0.866 g/mL at 25 °C Boiling Point 110 °C
Molecular Formula C4H13NO Melting Point °C
MSDS Chinese Flash Point 80 °F
Symbol GHS02 GHS05 GHS06 GHS08 GHS09
GHS02, GHS05, GHS06, GHS08, GHS09
Signal Word Danger

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name Tetramethylammonium hydroxide
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 0.866 g/mL at 25 °C
Boiling Point 110 °C
Melting Point °C
Molecular Formula C4H13NO
Molecular Weight 91.152
Flash Point 80 °F
Exact Mass 91.099716
PSA 23.06000
LogP 0.14560
Vapour Pressure 17.5 mm Hg ( 20 °C)
Index of Refraction n20/D 1.384
InChIKey WGTYBPLFGIVFAS-UHFFFAOYSA-M
SMILES C[N+](C)(C)C.[OH-]
Storage condition 2-8°C
Stability Stable. Flammable. Incompatible with strong oxidizing agents, strong acids.

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :
PA0875000
CHEMICAL NAME :
Methanaminium, N,N,N-trimethyl-, hydroxide
CAS REGISTRY NUMBER :
75-59-2
LAST UPDATED :
199710
DATA ITEMS CITED :
9
MOLECULAR FORMULA :
C4-H12-N.H-O
MOLECULAR WEIGHT :
91.18
WISWESSER LINE NOTATION :
1K1&1&1 &Q

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
19 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
JPETAB Journal of Pharmacology and Experimental Therapeutics. (Williams & Wilkins Co., 428 E. Preston St., Baltimore, MD 21202) V.1- 1909/10- Volume(issue)/page/year: 28,367,1926
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
1 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
85IXA4 "Structure et Activite Pharmacodyanmique des Medicaments du Systeme Nerveux Vegetatif," Bovet, D., and F. Bovet-Nitti, New York, S. Karger, 1948 Volume(issue)/page/year: -,688,1948
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
25 mg/kg
TOXIC EFFECTS :
Skin and Appendages - dermatitis, other (after systemic exposure)
REFERENCE :
NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: OTS0570994
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Parenteral
SPECIES OBSERVED :
Amphibian - frog
DOSE/DURATION :
5 mg/kg
TOXIC EFFECTS :
Vascular - BP elevation not characterized in autonomic section
REFERENCE :
85IXA4 "Structure et Activite Pharmacodyanmique des Medicaments du Systeme Nerveux Vegetatif," Bovet, D., and F. Bovet-Nitti, New York, S. Karger, 1948 Volume(issue)/page/year: -,688,1948
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Unreported
SPECIES OBSERVED :
Amphibian - frog
DOSE/DURATION :
1515 ug/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
85IXA4 "Structure et Activite Pharmacodyanmique des Medicaments du Systeme Nerveux Vegetatif," Bovet, D., and F. Bovet-Nitti, New York, S. Karger, 1948 Volume(issue)/page/year: -,681,1948 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - A1009 No. of Facilities: 48 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 48 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - A1009 No. of Facilities: 105 (estimated) No. of Industries: 6 No. of Occupations: 16 No. of Employees: 6413 (estimated) No. of Female Employees: 1446 (estimated)

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Symbol GHS02 GHS05 GHS06 GHS08 GHS09
GHS02, GHS05, GHS06, GHS08, GHS09
Signal Word Danger
Hazard Statements H226-H300 + H310-H314-H331-H370-H372-H411
Precautionary Statements P260-P264-P273-P280-P301 + P310-P302 + P350
Target Organs Liver, thymus gland
Personal Protective Equipment Faceshields;full-face respirator (US);Gloves;Goggles;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes T:Toxic; C:Corrosive;
Risk Phrases R20/21/22;R34
Safety Phrases S45-S36/37/39-S26-S16-S36/37
RIDADR UN 3286 3/PG 2
WGK Germany 1
RTECS PA0875000
Packaging Group II
Hazard Class 3
HS Code 2923900090

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2923900090
Summary 2923900090 other quaternary ammonium salts and hydroxides。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

 Articles50

More Articles

This table lists relevant public references with title, journal and publication metadata for this compound.

Cellulosic fibers with high aspect ratio from cornhusks via controlled swelling and alkaline penetration.

Carbohydr. Polym. 124 , 50-6, (2015)

Cellulosic fibers with high aspect ratio have been firstly obtained from cornhusks via controlled swelling in organic solvent and simultaneous tetramethylammonium hydroxide (TMAOH) post treatment with...

Interaction of myo-inositol hexakisphosphate with biogenic and synthetic polyamines.

Org. Biomol. Chem. 13 , 7500-12, (2015)

Within all the eukaryotic cells myo-inositol phosphates (InsPs) are an important group of biomolecules that are potentially related to signaling functions. The most abundant member of this family in n...

Directing the orientational alignment of anisotropic magnetic nanoparticles using dynamic magnetic fields.

Faraday Discuss. 181 , 449-61, (2015)

The structure-directing influence of static and dynamic, i.e. rotating, magnetic fields on the orientational alignment of spindle-type hematite particles with a high aspect ratio is investigated. Stru...

 Tetramethylammonium hydroxideBioassay

View more

This table contains target information, in‑vitro & in‑vivo assay data for this compound.

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 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

AR-300-49
tetreamethyl ammonium hydroxide
nmw-w
MFCD00008280
TMAH
TRITONNE
Developer
ocg945
TMNOH
AZ-300MIF
AZ-726
nmd3
EINECS 200-882-9

 Tetramethylammonium hydroxide | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the melting point of Tetramethylammonium hydroxide?
A: Melting point of Tetramethylammonium hydroxide is °C.
Q: What is the InChIKey of Tetramethylammonium hydroxide?
A: InChIKey of Tetramethylammonium hydroxide is WGTYBPLFGIVFAS-UHFFFAOYSA-M.
Q: What is the SMILES notation of Tetramethylammonium hydroxide?
A: SMILES notation of Tetramethylammonium hydroxide is C[N+](C)(C)C.[OH-].
Q: What is the molecular formula of Tetramethylammonium hydroxide?
A: Molecular formula of Tetramethylammonium hydroxide is C4H13NO.
Q: What is the molecular weight of Tetramethylammonium hydroxide?
A: Molecular weight of Tetramethylammonium hydroxide is 91.152.
Q: What is the safety information for Tetramethylammonium hydroxide?
A: Safety information for Tetramethylammonium hydroxide: S45-S36/37/39-S26-S16-S36/37.
Q: What is the CAS number of Tetramethylammonium hydroxide?
A: CAS number of Tetramethylammonium hydroxide is 75-59-2.
Q: What are the upstream materials of Tetramethylammonium hydroxide?
A: Related upstream materials(CAS) of Tetramethylammonium hydroxide: 67-56-1;616-38-6;75-50-3;64-20-0;58345-96-3;74-88-4;74-83-9;124-40-3;598-58-3;74-89-5.
Q: What is the boiling point of Tetramethylammonium hydroxide?
A: Boiling point of Tetramethylammonium hydroxide is 110 °C.
Q: What is the polar surface area (PSA) of Tetramethylammonium hydroxide?
A: Polar surface area (PSA) of Tetramethylammonium hydroxide is 23.06000.

 Tetramethylammonium hydroxidefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
Henan Tianfu Chemical Co., Ltd.
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