Name | Tetramethylammonium hydroxide pentahydrate |
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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 |
Melting Point | 67-70 °C(lit.) |
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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) |
Storage condition | 0-6°C |
Stability | Stable. Incompatible with strong oxidizing agents, strong acids. |
Water Solubility | soluble |
Symbol |
GHS05, GHS06 |
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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 |
Precursor 0 | |
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DownStream 4 | |
HS Code | 2923900090 |
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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% |