English Safety Data Sheet Database 中文版 MSDS

butyllithium

CAS No. 109-72-8 | PubChem CID 53627823
Section 1. Identification
Chemical Namebutyllithium CAS No.109-72-8
Synonymsn-butyllithium Chinese Name丁基锂
Molecular FormulaC4H9Li Molecular Weight64.06
UN No.3394 Data SourcePubChem (NIH/NLM)
GHS Hazard Classification
Signal Word DANGER
Pictograms GHS02 · Flammable GHS05 · Corrosive GHS07 · Irritant GHS08 · Health Hazard
Hazard Statements H250H260H302H314H317H318H225H336H360H362H370H372
Precautionary Statements P210P222P223P231P231+P232P233P260P261P264P264+P265P270P272P280P301+P317P301+P330+P331P302+P335+P334P302+P352P302+P361+P354P304+P340P305+P354+P338P316P317P321P330P333+P317P362+P364P363P370+P378P402+P404P405P501P203P240P241P242P243P263P271P303+P361+P353P308+P316P318P319P403+P233P403+P235

Section 2. Hazards Identification

This chemical does not meet GHS hazard criteria for 16.1% (55 of 341) of reports.

H250 (83.9%): Catches fire spontaneously if exposed to air [Danger Pyrophoric liquids]

H260 (83%): In contact with water releases flammable gases which may ignite spontaneously [Danger Substances and mixtures which in contact with water, emit flammable gases]

H302 (10.6%): Harmful if swallowed [Warning Acute toxicity, oral]

H314 (83.9%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

H317 (10.6%): May cause an allergic skin reaction [Warning Sensitization, Skin]

H318 (70.4%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

P210, P222, P223, P231, P231+P232, P233, P260, P261, P264, P264+P265, P270, P272, P280, P301+P317, P301+P330+P331, P302+P335+P334, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P333+P317, P362+P364, P363, P370+P378, P402+P404, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 341 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 55 of 341 reports by companies.

There are 13 notifications provided by 286 of 341 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.

H225: Highly Flammable liquid and vapor [Danger Flammable liquids]

H250: Catches fire spontaneously if exposed to air [Danger Pyrophoric liquids]

H260: In contact with water releases flammable gases which may ignite spontaneously [Danger Substances and mixtures which in contact with water, emit flammable gases]

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

H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]

H336: May cause drowsiness or dizziness [Warning Specific target organ toxicity, single exposure; Narcotic effects]

H360: May damage fertility or the unborn child [Danger Reproductive toxicity]

H362: May cause harm to breast-fed children [Reproductive toxicity, effects on or via lactation]

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

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

P203, P210, P222, P223, P231, P231+P232, P233, P240, P241, P242, P243, P260, P261, P263, P264, P264+P265, P270, P271, P280, P301+P330+P331, P302+P335+P334, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P308+P316, P316, P317, P318, P319, P321, P363, P370+P378, P402+P404, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)

P203, P210, P222, P223, P231, P231+P232, P233, P240, P241, P242, P243, P280, P302+P335+P334, P303+P361+P353, P318, P370+P378, P402+P404, P403+P235, P405, and P501 (click each P-code to see the statement)

Section 8. Exposure Controls / Personal Protection

0.18 [mg/m3]

4.5 [mg/m3]

27 [mg/m3]

Section 9. Physical and Chemical Properties

Wet Solid; Liquid

Available in solution of C5 to C7 hydrocarbons; [Hawley] In cyclohexane solution: Water-white to pale yellow liquid with a petroleum-like odor; [CAMEO] In n-hexane solution: Yellow liquid; [MSDSonline]

0.765 @25 °C

Metals -> Metals, Organic Compounds

Flammable agents - 4th degree

Reactive agents - 2nd degree

FCS -> FDA Inventory of Food Contact Substances Listed in 21 CFR

Section 10. Stability and Reactivity

CSL00127

Perfluorethyllithium + Phosphorus Trichloride,Phosphorus + N-BUTYLLITHIUM + CHLOROPENTAFLUOROETHANE

Avoid temperatures below -90 C

Substitution

Several times in our laboratory, we have experienced a violent decomposition of the ethereal C2F5Cl/n-BuLi solution after the addition of just a few drops of (R)nPCl3=n. In each of these cases, the metal-halogen exchange temperature was maintained below -90 C. We believe that this problem is due to a buildup of starting reagents at low temperatures.

CSL00134

OXYGEN + COPPER(II) CHLORIDE DIHYDRATE + 2,6-DIBROMOPYRIDINE + N-BUTYLLITHIUM + DIETHYL ETHER

O2 reacted with the organocopper (or remaining organolithium) reagent to form some peroxides which exploded

Explosive

Ullmann coupling

ACS Safety Letters

Section 11. Toxicological Information

Neurotoxin - Other CNS neurotoxin

Nephrotoxin - The chemical is potentially toxic to the kidneys in the occupational setting.

Dermatotoxin - Skin burns.

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

Source: PubChem CID 53627823 (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 08:55:34.
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.