Tetramethylammonium Hydroxide Pentahydrate

Modify Date: 2025-08-19 22:54:45

Tetramethylammonium Hydroxide Pentahydrate Structure
Tetramethylammonium Hydroxide Pentahydrate structure
 Common Name Tetramethylammonium Hydroxide Pentahydrate
CAS Number 10424-65-4 Molecular Weight 181.229
Density N/A Boiling Point N/A
Molecular Formula C4H23NO6 Melting Point 67-70 °C(lit.)
MSDS Chinese USA Flash Point N/A
Symbol GHS05 GHS06
GHS05, GHS06		 Signal Word Danger

 Names

Name Tetramethylammonium hydroxide pentahydrate
Synonym More Synonyms

 Chemical & Physical Properties

Melting Point 67-70 °C(lit.)
Molecular Formula C4H23NO6
Molecular Weight 181.229
Exact Mass 181.152542
PSA 69.21000
Vapour density 1.1 (vs air)
Vapour Pressure 97 mm Hg ( 20 °C)
InChIKey MYXKPFMQWULLOH-UHFFFAOYSA-M
SMILES C[N+](C)(C)C.O.O.O.O.O.[OH-]
Storage condition 0-6°C
Stability Stable. Incompatible with strong oxidizing agents, strong acids.
Water Solubility soluble

 Safety Information

Symbol GHS05 GHS06
GHS05, GHS06
Signal Word Danger
Hazard Statements H300-H311-H314
Precautionary Statements P264-P280-P301 + P310-P305 + P351 + P338-P310
Personal Protective Equipment Eyeshields;Faceshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges
Hazard Codes T:Toxic;C:Corrosive;
Risk Phrases R20/21/22;R24/25;R34;R44
Safety Phrases S26-S36/37/39-S45
RIDADR UN 3423 8/PG 2
WGK Germany 1
RTECS PA0875000
Packaging Group II
Hazard Class 8
HS Code 2923900090

 Customs

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%

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 Synonyms

Tetramethylammonium Hydroxide Pentahydrate
TMAH Pentahydrate
N,N,N-Trimethylmethanaminium hydroxide hydrate (1:1:5)
Methanaminium, N,N,N-trimethyl-, hydroxide, hydrate (1:1:5)
Tetramethylammonium hydroxide
tetramethylazanium,hydroxide,pentahydrate
EINECS 200-882-9
MFCD00149566
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Chemsrc provides CAS#:10424-65-4 MSDS, density, melting point, boiling point, structure, etc. Its name is Tetramethylammonium Hydroxide Pentahydrate>> amp version: Tetramethylammonium Hydroxide Pentahydrate

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