GBL (Gamma-Butyrolactone)-Liquid

Colorless transparent liquid Gamma-Butyrolactone(GBL) CAS No.96-48-0

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gamma-Butyrolactone Basic info.
CAS No.96-48-0
Chemical Name:gamma-Butyrolactone
Synonyms:GBL;BLO;6480;BLON;c-1070;GBL-EL;gamma-BL;CadionGr;Butanolid;FEMA 3291
CBNumber:CB9719491
Molecular Formula:C4H6O2
Formula Weight:86.09

Gamma-Butyrolactone(GBL) Description
γ-Butyrolactone (GBL) is a hygroscopic colorless liquid with a weak characteristic odor and profoundly disgusting taste. Soluble in water, GBL is a common solvent and reagent in chemistry as well as being used as a flavouring, as a cleaning solvent, as a superglue remover, and as a solvent in some wet aluminium electrolytic capacitors. In humans it acts as a prodrug for γ-hydroxybutyric acid (GHB), and it is used as a recreational intoxicant with effects similar to alcohol.

gamma-Butyrolactone Property
Melting point :−45 °C(lit.)
Boiling point :204-205 °C(lit.)
density :1.12 g/mL at 25 °C(lit.)
vapor density :	3 (vs air)
vapor pressure :1.5 mm Hg ( 20 °C)
FEMA :	3291
refractive index :n20/D 1.436(lit.)
Fp :209 °F
storage temp. :2-8°C
Water Solubility :MISCIBLE
Merck :	13,1596
Stability::Stable. Hygroscopic. Incompatible with strong oxidizing agents, strong acids, strong bases, strong reducing agents.

Chemical properties
Colorless transparent liquid It is miscible with water and the general organic and slightly soluble in aliphatic hydrocarbons.

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.

Chemical Properties
colourless oily liquid

Uses
r-butyrolactone 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.

Applications
Nutritional supplement
Due to its property of being a prodrug of GHB which increases sleep related growth hormone (GH) secretion,GBL was sold as a nutritional supplement after the scheduling of GHB, under the names Revivarant and Renewtrient in the U.S. at least until the end of 1999.

Recreational drug
GBL is a prodrug of GHB and its recreational use comes entirely as a result of this. To bypass GHB restriction laws, home synthesis kits were introduced to transform GBL and/or 1,4-B into GHB.
GBL overdose can cause irrational behaviour, severe sickness, coma and death. GBL has a distinctive taste and odour, described as being comparable to stale water, synthetic melon aroma or burnt plastic. This differs significantly from GHB, which is described as having a decidedly "salty" taste.