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Butyllithium

Butyllithium structure

CAS No:
109-72-8
Formula:
C4H9Li
Chemical Name:
Butyllithium
Synonyms:
Lithium,butyl-;Butyllithium;1-Butyllithium;n-Butyllithium;52948-61-5
Categories:
Pharmaceutical Intermediates > Bulk Drug Intermediates

Description

n-Butyllithium (abbreviated n-BuLi) is an organolithium reagent. It is widely used as a polymerization initiator in the production of elastomers such as polybutadiene or styrene-butadiene-styrene (SBS). Also, it is broadly employed as a strong base (superbase) in the synthesis of organic compounds as in the pharmaceutical industry.

Liquid

Butyllithium is an alkyllithium compound.

Butyllithium Basic Attributes

Molecular Weight：

64.05530

Exact Mass：

64.08640

EC Number：

203-698-7

UNII：

09W9A6B8ZC

UN Number：

2445

DSSTox ID：

DTXSID1026821

HScode：

2931900090

Characteristics

PSA：

XLogP3：

1.75410

Appearance：

Liquid

Density：

0.765 g/cm³

Melting Point：

109-111 °C

Boiling Point：

80ºC

Flash Point：

10 °F

Water Solubility：

H2O: vigorous reaction

Storage Conditions：

2-8ºC

Safety Information

Packing level：

Hazard category：

4.3

Transport codes：

UN 2445

wgk germany：

hazard class code：

R11; R14/15; R17; R35; R48/20; R63; R65; R67

safety instructions：

S16-S26-S36/37/39-S43-S45-S46-S62-S6

Marks：

F; C

Stability/Shelf Life：

Stable under normal temperatures and pressures.

Precautionary statement(s)：

P210-P222-P231 + P232-P261-P273-P422

Hazard Statements：

H225-H250-H261-H304-H314-H336-H410

RIDADR：

UN 2445

Caution Statement：

P210; P231 + P232; P280; P301 + P310; P302 + P334; P303 + P361 + P353; P304 + P340 + P310; P305 + P351 + P338; P331; P422

Fire Hazards：

Flammable - 4th degree, Reactive - 2nd degree

GHS Classification：

|Danger|H250 (100%): Catches fire spontaneously if exposed to air [Danger Pyrophoric liquids; Pyrophoric solids]|P210, P222, P223, P231+P232, P260, P261, P264, P270, P272, P280, P301+P312, P301+P330+P331, P302+P334, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P330, P333+P313, P335+P334, P363, P370+P378, P402+P404, P405, P422, and P501|Aggregated GHS information provided by 243 companies from 10 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H225: Highly Flammable liquid and vapor [Danger Flammable liquids]|P201, P202, P210, P222, P223, P231+P232, P233, P240, P241, P242, P243, P280, P281, P302+P334, P303+P361+P353, P308+P313, P335+P334, P370+P378, P402+P404, P403+P235, P405, P422, and P501

Drug Information

MeSH Entry Terms：

bu-Li|n-BuLi

Butyllithium Use and Manufacturing

Uses

Organic synthesis.

Intermediates

Manufacturing Info：

All other basic organic chemical manufacturing|Lithium, butyl-: ACTIVE

Use Classification：

Fire Hazards -> Flammable - 4th degree, Reactive - 2nd degree

Computed Properties

Molecular Weight:64.1
Hydrogen Bond Acceptor Count:1
Rotatable Bond Count:1
Exact Mass:64.08642872
Monoisotopic Mass:64.08642872
Heavy Atom Count:5
Complexity:7.6
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes

Synthesis Route

62735-89-1

76014-60-3

76014-62-5

Material

Butyl chloride

Benzene

Price Analysis

Make your Butyllithium purchase based on the price and market insights! ECHEMI provides professional market insights with prices for you to make a better choice. Learn more on Butyllithium prices .

Data: 2026-09-04
Price: 58000.00Yuan/ton
Change: 0

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