- SEC-BUTYLLITHIUM
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- $0.00/ kg
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2023-11-28
- CAS:598-30-1
- Min. Order: 1kg
- Purity: 0.99
- Supply Ability: 10 tons
- SEC-BUTYLLITHIUM
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- $0.00 / 25KG
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2023-09-27
- CAS:598-30-1
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 50000KG/month
- SEC-BUTYLLITHIUM
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- $30.00 / 1KG
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2023-09-06
- CAS:598-30-1
- Min. Order: 50KG
- Purity: 99%
- Supply Ability: 500000kg
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| | SEC-BUTYLLITHIUM Basic information |
| | SEC-BUTYLLITHIUM Chemical Properties |
| density | 0.769 g/mL at 25 °C | | Fp | 1 °F | | storage temp. | 2-8°C | | form | Liquid | | color | Clear colorless | | Sensitive | Air & Moisture Sensitive | | BRN | 3587206 | | Exposure limits | ACGIH: TWA 100 ppm
OSHA: TWA 300 ppm(1050 mg/m3)
NIOSH: IDLH 1300 ppm; TWA 300 ppm(1050 mg/m3) | | InChIKey | VATDYQWILMGLEW-UHFFFAOYSA-N | | CAS DataBase Reference | 598-30-1(CAS DataBase Reference) | | EPA Substance Registry System | Lithium, (1-methylpropyl)- (598-30-1) |
| | SEC-BUTYLLITHIUM Usage And Synthesis |
| Description | sec-Butyllithium. [598-30-1], sec-C4H9Li, Mr 64.06, is a spontaneously flammable, colorless, viscous liquid that forms tetramers in hydrocarbon solvents. It is commercially available only as 12 % solution in cyclohexane and methylcyclohexane. sec-Butyllithium is more nucleophilic and decomposes more readily than n-butyllithium. A 12 % solutionin cyclohexane at 20 ℃ undergoesthermal decomposition to the extent of 1.4 % of the active material per month. The thermal decomposition yields butene gas and LiH; the latter is insoluble and responsible for the increasing turbidity of secbutyllithium solutions on prolonged storage. Therefore solutions of sec-butyllithium must be kept cool during storage and transportation. | | Chemical Properties | sec-Butyllithium is a colorless crystalline solid or clear yellowish solution. It is more reactive than n-butyllithium. Its solutions are unstable and decompose about 10 to 15 times as fast as n-butyllithium under the same conditions.
 | | Uses | sec-Butyllithium is used almost exclusively as a polymerization catalyst. It is more expensive than n-butyllithium and is used mainly because of its greater reactivity and faster polymerization initiation. | | Preparation | sec-Butyllithium is produced by the reaction of
sec-butyl chloride with lithium metal dispersion in hydrocarbon solvents. The lithium
metal should contain catalytic amounts of up to 2 % sodium metal to attain a rapid reaction
with the chloride and to minimize coupling. Massive substitution of sodium metal for
lithium metal as is done in the preparation of n-butyllithium results in lower yields. Isopentane,
hexane and cyclohexahe are typical solvents. Industrial and laboratory preparations
are similar. |
| | SEC-BUTYLLITHIUM Preparation Products And Raw materials |
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