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|Melting Point:||- 43.53||Boiling Point:||204|
|Critical Pressure:||3.4 MPa||Content:||99.5% Or More|
Gelatin; γ-butyrolactone; γ-hydroxybutyrolactone; 1,4-butyrolactone; 2 (3H) -hydrofuranone
【English name】 butyrolactone; GBL, γ-BLO.
EINECS number: 202-509-5
Structure or molecular formula
Molecular formula C4H6O2
Molecular structure: Carbonyl C, O atoms are sp2 hybrid orbital to form σ bond. The other C and O atoms form the σ bond with the sp3 hybrid orbital.
[Relative molecular weight or atomic weight] 86.09
[Density] relative density 1.1253 (254 ℃)
【Melting point (℃)】 - 43.53
[Boiling point (℃)] 204
[Refractive index 15 ℃] 1.4348
Boundary constant (20 ℃) 39
Dipole moment (25 ° C benzene): 13.74
Critical temperature: 436 ° C
Critical pressure: 3.4 mPa.
Viscosity: 1.7 mPa.s 25 degrees C.
Tension: 52.3 mNm. 25 degrees C.
Flash point: 98.3 (open cup).
Evaporation heat (204 ° C) (kjmol) 52.3
Colorless oily liquid, slightly ketone flavor. Commodity ph about 4.5.
Chemical properties: stable in the neutral medium, in the hot alkali is easy to produce reversible hydrolysis, ph back to neutral when the generation of lactone. Hydrolysis in acidic medium is slow.
Content: 99.5% or more
Colorless transparent liquid. With water and the general organic solvent can be miscible. Slightly soluble in aliphatic hydrocarbons.
Γ-Butyrolactone is a highly soluble, non-toxic, safe and easy to use high boiling point solvent, used in petroleum processing as butadiene, aromatic, advanced grease extractor; used in the chemical fiber industry Acrylonitrile fiber spinning solvent, wool, nylon, acrylonitrile and other fiber dyeing auxiliaries. In organic synthesis, GBL is also widely used, it is the synthesis of α-pyrrolidone, N-methyl pyrrolidone, vinyl pyrrolidone, acetyl-γ-butyrolactone, cyclopropylamine and other raw materials, synthetic insecticides, weeding Agents, drug brain rehabilitation, ciprofloxacin, vitamin B1, chlorophyll and other intermediates. Also used in the synthesis of chlorophenoxy butyric acid herbicides, plant growth regulators.
Γ-Butyrolactone Price: 20 yuan kg
Γ-butyrolactone is an important chemical raw material and pharmaceutical intermediates, is the synthesis of N-methyl pyrrolidone, α-pyrrolidone, polyvinyl pyrrolidone, α-acetyl-γ-butyrolactone, methionine and butyric acid Intermediates of compounds. This product is highly soluble, polyacrylonitrile, epoxy resin, polyvinyl butyral, polyvinyl chloride and its copolymers, cellulose polymer excellent solvent. In the pharmaceutical industry, this product is mainly used for the synthesis of cyclopropylamine and so on.
Molecular formula: C4H6O2
The molecular weight is: 86.09
Colorless and transparent, with an acetonitrile-like oily liquid, the boiling point of 204 ° C, with any proportion of water, acetone, benzene, carbon tetrachloride and ethanol miscible.
Third, the product specifications: indicators
1.125 to 1.130
1.436 ~ 1.437
Galvanized iron drum, net weight 200kg per barrel.