n-Butyllithium
Also known as: Butyllithium, 1-Butyllithium, Butyl lithium, Lithium butyl, N-Buli, Lithium, butyl-
n-Butyllithium (CAS 109-72-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C4H9Li and a molecular weight of 64.055 g/mol. Key properties include a melting point of -95 °C, a boiling point of 60-80 ºC, a density of 0.68 g/mL at 20 °C and a flash point of -21 ºC. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H250 and H261. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 109-72-8
- Jingsj CID
- J-30614-9
- Molecular Formula
- C4H9Li
- Molecular Weight
- 64.055 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -95 °C |
|---|---|
| Boiling Point | 60-80 ºC |
| Density | 0.68 g/mL at 20 °C |
| Flash Point | -21 ºC |
| Exact Mass | 64.086426 |
| LogP | 1.75410 |
| Additional Property | vigorous reaction |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H250
- H261
- H304
- H314 — Causes severe skin burns and eye damage
- H336 — May cause drowsiness or dizziness
- H410 — Very toxic to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2931900090 |
|---|---|
| Summary | 2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of n-Butyllithium?
The CAS number of n-Butyllithium is 109-72-8.
What are the molecular formula and molecular weight of n-Butyllithium?
n-Butyllithium has molecular formula C4H9Li and molecular weight 64.055 g/mol.
Is n-Butyllithium hazardous?
n-Butyllithium has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H250; H261.
What are the upstream and downstream products of n-Butyllithium?
For n-Butyllithium, Upstream Products: 1-Bromobutane, 1-Chlorobutane, Tetrabutylammonium bromide; Downstream Products: 2,3-dimethoxy-6-[(2-methylpropan-2-yl)oxycarbonylamino]benzoic acid, 5-Bromo-4-hydroxynicotinic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "n-Butyllithium (CAS 109-72-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30614-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.