English Safety Data Sheet Database 中文版 MSDS

Tetraethylammonium Hydroxide

CAS No. 77-98-5 | PubChem CID 6509
Section 1. Identification
Chemical NameTetraethylammonium Hydroxide CAS No.77-98-5
Synonymstetraethylammoniumhydroxide Chinese Name氢氧化四乙基铵
Molecular FormulaC8H21NO Molecular Weight147.26
UN No.3267 Data SourcePubChem (NIH/NLM)
GHS Hazard Classification
Signal Word DANGER
Pictograms GHS05 · Corrosive GHS06 · Acute Toxic GHS07 · Irritant GHS08 · Health Hazard GHS09 · Environmental Hazard
Hazard Statements H290H302H311H314H318H370H372H410H312
Precautionary Statements P234P260P262P264P264+P265P270P273P280P301+P317P301+P330+P331P302+P352P302+P361+P354P304+P340P305+P354+P338P308+P316P316P317P319P321P330P361+P364P363P390P391P405P406P501P362+P364

Section 2. Hazards Identification

H290 (15.3%): May be corrosive to metals [Warning Corrosive to Metals]

H302 (48.8%): Harmful if swallowed [Warning Acute toxicity, oral]

H311 (39.9%): Toxic in contact with skin [Danger Acute toxicity, dermal]

H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

H318 (65.1%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

H370 (50.2%): Causes damage to organs [Danger Specific target organ toxicity, single exposure]

H372 (48.8%): Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]

H410 (48.8%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]

P234, P260, P262, P264, P264+P265, P270, P273, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P308+P316, P316, P317, P319, P321, P330, P361+P364, P363, P390, P391, P405, P406, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 301 reports by companies from 17 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

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.

H302: Harmful if swallowed [Warning Acute toxicity, oral]

H312: Harmful in contact with skin [Warning Acute toxicity, dermal]

H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

P260, P264, P270, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P362+P364, P363, P405, and P501 (click each P-code to see the statement)

Section 8. Exposure Controls / Personal Protection

0.90 [mg/m3]

9.9 [mg/m3]

59 [mg/m3]

Section 9. Physical and Chemical Properties

Aqueous solution: Colorless odorless liquid; [Merck Index] 35% Aqueous solution: Colorless to pale yellow liquid; [Alfa Aesar MSDS]

Nitrogen Compounds -> Quaternary Amines

Section 11. Toxicological Information

Dermatotoxin - Skin burns.

Source: PubChem CID 6509 (NIH/NLM, public domain). Retrieved from PubChem, a public-domain chemistry database maintained by the U.S. National Library of Medicine. Last updated: 2026-08-02 09:53:31.
Disclaimer: This information is compiled for reference only and does not replace the manufacturer's official Safety Data Sheet. Always consult the supplier's SDS before handling any chemical.