English Safety Data Sheet Database 中文版 MSDS

Tetrabutylammonium Hydroxide

CAS No. 2052-49-5 | PubChem CID 2723671
Section 1. Identification
Chemical NameTetrabutylammonium Hydroxide CAS No.2052-49-5
Synonymstetrabutylammoniumhydroxide(40%aqueous solution) Chinese Name氢氧化四丁基铵
Molecular FormulaC16H37NO Molecular Weight259.4743
UN No.3267 Data SourcePubChem (NIH/NLM)
GHS Hazard Classification
Signal Word DANGER
Pictograms GHS02 · Flammable GHS05 · Corrosive GHS07 · Irritant
Hazard Statements H226H302H314H318H312
Precautionary Statements P210P233P240P241P242P243P260P264P264+P265P270P280P301+P317P301+P330+P331P302+P361+P354P303+P361+P353P304+P340P305+P354+P338P316P317P321P330P363P370+P378P403+P235P405P501P302+P352P362+P364

Section 2. Hazards Identification

This chemical does not meet GHS hazard criteria for 11.5% (43 of 373) of reports.

H226 (51.7%): Flammable liquid and vapor [Warning Flammable liquids]

H302 (52%): Harmful if swallowed [Warning Acute toxicity, oral]

H314 (88.2%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

H318 (52.8%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

P210, P233, P240, P241, P242, P243, P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P317, P321, P330, P363, P370+P378, P403+P235, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 373 reports by companies from 14 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Reported as not meeting GHS hazard criteria per 43 of 373 reports by companies.

There are 13 notifications provided by 330 of 373 reports by companies with hazard statement code(s).

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

1.2 [mg/m3]

13 [mg/m3]

79 [mg/m3]

Section 9. Physical and Chemical Properties

55% Aqueous solution: Colorless liquid; [Alfa Aesar MSDS]

0.968 @25 °C

Nitrogen Compounds -> Quaternary Amines

Section 11. Toxicological Information

Dermatotoxin - Skin burns.

Toxic Pneumonitis - Inflammation of the lungs induced by inhalation of metal fumes or toxic gases and vapors.

Source: PubChem CID 2723671 (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 09:53:29.
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.