| Identification | More | [Name]
SEC-BUTYLLITHIUM | [CAS]
598-30-1 | [Synonyms]
LITHIUM-2-BUTANIDE
LITHIUM SEC-BUTYL
S-BULI
S-BUTYLLITHIUM
SEC-BUTYLLITHIUM
(1-methylpropyl)-lithiu
ButyllithiumincyclohexanecaMcolorlesslightyellow
sec-Butyllithium solution
SEC-BUTYLLITHIUM SOLUTION, ~1.3 M IN CYC LOHEXANE
SEC-BUTYLLITHIUM, 1.4M SOLUTION IN CYCLOHEXANE
sec-Butyllithium,1Mincyclohexane
sec-Butyllithium, 1.3M solution in cyclohexane/hexane (92/8)
s-Butyllithium,11-12%incyclohexane(~1M)
Lithium, (1-methylpropyl)-
sec-butyllithium, 1.3m in cyclohexane, packaged under argon in resealable chemseal
SEC-BUTYLLITHIUM,1.3MSOLUTIONINCYCLOHEXANE
sec-Buthyllithium
SEC-BUTYLLITHIUM: 12% (CA. 1.4M) SOL. IN CYCLOHEXANE
S-BUTYLLITHIUM: 11-12% IN CYCLOHEXANE (CA. 1M)
sec-Butyllithium, 1.3M in cyclohexane, packaged under Argon in resealable ChemSealTM bottles | [EINECS(EC#)]
209-927-7 | [Molecular Formula]
C4H9Li | [MDL Number]
MFCD00009323 | [Molecular Weight]
64.06 | [MOL File]
598-30-1.mol |
| Chemical Properties | Back Directory | [Appearance]
clear yellowish solution | [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]
598-30-1(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
F,C,N | [Risk Statements ]
R11:Highly Flammable.
R15:Contact with water liberates extremely flammable gases.
R17:Spontaneously flammable in air.
R34:Causes burns.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R65:Harmful: May cause lung damage if swallowed.
R67:Vapors may cause drowsiness and dizziness.
R66:Repeated exposure may cause skin dryness or cracking.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S43:In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add-Never use water) .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S62:If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label .
S33:Take precautionary measures against static discharges .
S16:Keep away from sources of ignition-No smoking . | [RIDADR ]
UN 3394 4.2/PG 1
| [WGK Germany ]
2
| [F ]
1-10 | [TSCA ]
Yes | [HazardClass ]
4.3 | [PackingGroup ]
I | [HS Code ]
29319090 |
| Hazard Information | Back Directory | [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. |
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