INTRODUCTION
γ-Butyrolactone (GBL) is a hygroscopic colorless, water-miscible liquid with a weak characteristic odor. It is the simplest 4-carbon lactone. It is mainly used as an intermediate in the production of other chemicals, e.g., methyl-2-pyrrolidone. In humans GBL acts as a prodrug for γ-hydroxybutyric acid (GHB), and it is used as a recreational CNS depressant with effects like those of barbiturates.
Manufacture
γ-Butyrolactone is produced industrially by dehydrogenation of 1,4-butanediol at a temperature of 180–300 °C and atmospheric pressure in the presence of a copper catalyst.
Synonyms | γ-Butalactone 1,4-Butanolide Butyrolactone Dihydro-2(3H)-furanone 4-Hydroxybutyric acid τ-lactone |
CAS no. | 96-48-0 |
EINECS no. | 202-509-5 |
Molecular formula | C4H6O2 |
Molecular weight | 86.09 |
Structure |
Applications
GBL serves as a chemical intermediate in the manufacturing of all pyrrolidones |
It is used in the production of pesticides, herbicides and plant growth regulators |
GBL is key intermediate in the production of a) DL-methionine b) Piperidine c) 4-Phenylbutyric acid d) Thiobutyric acid e) Cyclopropylamine f) 1-Tetralone g) 3-Indolebutyric acid h) Sorbic acid |
Photochemical etching |
Electrolytes of small batteries of capacitors |
Viscosity modifiers in polyurerthanes |
Surface etching of metal coated plastics |
Organic paint disbursements for water soluble inks |
pH regulators in the dyeing of wool and polyamide fibers foundry chemistry as a catalyst during curing |
Curing agents in many coatings system based on urethanes and amides |
As solvent in manufacture of Polyacrylonitrile, Cellulose acetate, PMMA |
As ingredient in Paint removers, Textile aids, Drilling oils |
SPECIFICATIONS
Test | Unit | Specifications |
---|---|---|
Appearance | – | Clear and colorless liquid |
Color | APHA | Max 20.0 |
Purity (by GC) | % | Min 99.70 |
1,4-Butanediol (by GC) | % | Max 0.10 |
Acid as Butyric acid | % | Max 0.03 |
Water Content (by KF) | % | Max 0.05 |
STORAGE
Keep containers tightly closed when not in use. Store in cool, dry place, out of direct sunlight.
PACKING
200 kg MS drum |
1000 kg IBC |
ISO-tank |
REACH Status
GBL offered by ExSyn is registered under EU REACH regulations.
ExSyn offers GBL on commercial scales and welcomes enquiries. No matter the quantity you need, our exceptional quality and service will make ExSyn your supplier of choice! If you need any additional information or SDS, please get in touch with us.
Sodium trifluoroacetate is a colorless organic solid belonging to category of fluoro compounds. It acts as a versatile trifluoromethylation agent in chemicals synthesis and is used to produce an array of chemical intermediates.
Iodopropynyl butylcarbamate, also known as IPBC, is an antimicrobial ingredient commonly used in cosmetics. It appears as a white, crystalline powder. It is not a paraben; it belongs to a different chemical class called carbamates. It is soluble in both water and oil-based systems. IPBC was invented in the 1970s and has a long history of effective use as an antifungal technology.
Stevia extract with Rebaudioside A (98%) is one of the sweet tasting steviol glycoside, extracted and purified from Stevia rebaudiana (Bertoni) – a small perennial shrub also known as “Honey leaf”. The leaves of S. rebaudiana contain more than 30 different steviol glycosides, among which stevioside and rebaudioside A are present in the highest levels. It is non-nutritive and tastes approximately 200-300 times sweeter than sucrose.
Protoporphyrin IX dimethyl ester, abbreviated PPMX, is an organic moiety belonging to category porphyrins. On exposure to light, PPMX releases reactive oxygen that can be used to destroy targeted cancer cells and thus it find applications largely in medicines.
Cetylpyridinium chloride is the chloride salt form of cetylpyridinium, a quaternary ammonium with broad-spectrum antimicrobial activity. Upon topical administration, cetylpyridinium chloride is positively charged and reacts with the negatively charged microbial cell surfaces, thereby destroying the integrity of the cell membrane.
N2-Isobutyryl-2′-O-methyl-guanosine (IBG) is a modified nucleoside that has gained significant attention in recent years due to its potential therapeutic and industrial applications. IBG is a derivative of guanosine, a nucleoside that is a building block of RNA and DNA.
Trimethylaluminium belongs to class of organometallics. It is a highly reactive chemical and its solution in toluene is normally used to facilitate workability. Its general applications are in cross coupling and carboalumination reactions.
Octenidine dihydrochloride is a cationic surfactant, with a gemini-surfactant structure. Since 1987, it has been used primarily in Europe as an antiseptic prior to medical procedures, including on neonates. It is safe to handle and chemically stable.
Allyl Glycidyl Ether (AGE) is a multifunctional organic intermediate made from epichlorohydrin and allyl chloride and is featured by high functionality and low chlorine content. Since it has an epoxy group and an allyl group, AGE reacts with a wide range of compounds.