99.93% High Purity Solvent GBL (Gamma-Butyrolactone) For Special Purpose

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Details:

Product Name: gamma-Butyrolactone
Other Name: GBL
CAS: 96-48-0
MF: C4H6O2
MW: 86.09
EINECS: 202-509-5

Chemical Properties:
mp -45 °C(lit.)
bp 204-205 °C(lit.)
fp 209 °F
density 1.12 g/mL at 25 °C(lit.)
vapor density 3 (vs air)
vapor pressure 1.5 mm Hg ( 20 °C)
storage temp. 2-8°C
Water Solubility MISCIBLE
Stability: Stable. Hygroscopic. Incompatible with strong oxidizing agents, strong acids, strong bases, strong reducing agents.
Appearance: colourless oily liquid

Safety Information:
Hazard Codes Xn,F
Risk Statements 22-36-67-41-20/21/22-11
Safety Statements 26-36-39-36/37-16
WGK Germany 1
RTECS LU3500000
HS Code 29322980

Usage:
GBL is one kind of important fine chemicalintermediate, simultaneously also is one kind of performance fine highboiling point solvent, ideal antioxidant, plasticizer,extracting agent, absorbent, dispersing agent, solid stain, Coagulation Reagent.

Uses:
It is an important organic synthesis intermediate which can be used to synthesize indole butyric acid, butyric acid, succinic acid, α-pyrrolidone, N-methylpyrrolidone, vinyl pyrrolidone, acetyl-γ-butyrolactone, cyclopropylamine, ciprofloxacin, vitamin B1, chlorophyll and so on;
It is a non-toxic high boiling point solvent with high solubility and safe and convenient usage and management;
It is used as an extractant for butadiene, aromatic, advanced grease petroleum processing;
It is used as an acrylonitrile fiber spinning solvent in the chemical fiber industry.
It is a thinner and curing agent commonly used in wool, nylon, acrylonitrile and other fiber dyeing auxiliaries and other chemical industries.

Production:

Maleic anhydride hydrogenation method is an advanced technology developed in 1970s. It can produce tetrahydrofuran and γ-butyrolactone in any proportion with a hydrogenation reaction, and the usual ratio is tetrachlorofuran: γ-butyrolactone = 3-4:1.
There are many production enterprises, but usually in small scale. The average level is 300t/a. The production capacity account for 30% of the total domestic production capacity. 2.1, 4-butanediol dehydrogenation reactor is a tube array reactor, filled with flake copper catalyst (with zinc oxide as the carrier). The reaction temperature is controlled at 230-240 ° C. The yield of the product is obtained by reduced pressure distillation of and the yield is above 77%.