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108-29-2

Basic Information
CAS No.: 108-29-2
Name: 2(3H)-Furanone,dihydro-5-methyl-
Molecular Structure:
Molecular Structure of 108-29-2 (2(3H)-Furanone,dihydro-5-methyl-)
Formula: C5H8O2
Molecular Weight: 100.13
Synonyms: Valericacid, 4-hydroxy-, g-lactone (6CI);Valeric acid, g-hydroxy-, lactone (3CI);(RS)-g-Pentalactone;4-Hydroxypentanoic acid lactone;4-Hydroxypentanoic acid g-lactone;4-Hydroxyvaleric acid lactone;4-Methyl-g-butyrolactone;4-Methylbutyrolactone;4-Pentanolide;5-Methyldihydro-2(3H)-furanone;5-Methyltetrahydro-2-furanone;Dihydro-5-methyl-2(3H)-furanone;Dihydro-5-methyl-2-furanone;NSC 33700;Pentanoic acid, 4-hydroxy-, g-lactone;Tetrahydro-5-methyl-2-furanone;g-Methyl-g-butyrolactone;g-Methylbutyrolactone;g-Pentalactone;
EINECS: 203-569-5
Density: 1.05 g/cm3
Melting Point: -31 °C(lit.)
Boiling Point: 206.624 °C at 760 mmHg
Flash Point: 74.98 °C
Solubility: miscible with water
Appearance: colorless to pale yellow clear liquid
Hazard Symbols: IrritantXi
Risk Codes: 36
Safety: 39-26
Transport Information:
PSA: 26.30000
LogP: 0.71190
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  • Casno:

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  • gamma-Valerolactone CAS 108-29-2

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    108-29-2

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  • Casno:

    108-29-2

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  • gamma-Valerolactone

  • Casno:

    108-29-2

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  • 108-29-2 gamma-Valerolactone

  • Casno:

    108-29-2

    108-29-2 gamma-Valerolactone

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Chemistry

Molecular Formula:C5H8O2
Molar mass:100.11582g/mol
Structure:
          
Synonyms :4-Pentanolide;Valerolactone;gamma-Valerolakton;gamma-Pentanolactone;.gamma.-Pentalactone;Pentanolide-1,4;gamma-Valeryllactone;gamma-Valerolactone;gamma-Pentalactone
Appearance:Colorless to pale yellow transparent liquid
Density:1.04 g/cm3                                   
Flash Point:75 °C                    
Boiling Point:206.6 °C at 760 mmHg
Vapour Pressure:0.235 mmHg at 25°C           
Melting point:-31 °C(lit.)
Solubility:Immiscible in water and most organic solvents, resin, wax, etc., do not dissolve in anhydrous glycerin, gum arabic, casein and soy protein.
Water solubility:MISCIBLE
vapor density:3.45 (vs air)

Uses

VALEROLACTONE(108-29-2) has strong ability to respond.
VALEROLACTONE(108-29-2) can be used as resins solvents and a variety of  the compounds' intermediates . And also used as lubricants, plasticizers, non-ionic surface active agent of the gelling agent, the inner esters of lead in gasoline additives, used for dyeing cellulose esters and synthetic fibers.

Production

VALEROLACTONE(108-29-2) has been derived by heating acetyl-acetic acid and sulfuric acid.And also can be derived from levulinic acid on the presence of hydrogenation in the nickel, copper or other metal catalysts.

Toxicity Data With Reference

1.   

skn-rbt 500 mg/24H MLD

   FCTOD7    Food and Chemical Toxicology. 20 (Suppl)(1982),847.
2.   

sln-smc 24400 ppm

   MUREAV    Mutation Research. 201 (1988),431.
3.   

orl-rat LD50:8800 mg/kg

   JIHTAB    Journal of Industrial Hygiene and Toxicology. 27 (1945),263.
4.   

orl-rbt LD50:2480 mg/kg

   JIHTAB    Journal of Industrial Hygiene and Toxicology. 27 (1945),263.
5.    Carcinogenicity:4-VALEROLACTONE(108-29-2)- Not listed as a carcinogen by  NTP, IARC,ACGIH, or CA Prop 65. 
Other: See actual entry in RTECS for complete information.

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Moderately toxic by ingestion. A skin irritant. Mutation data reported. Combustible liquid when exposed to heat or flame; can react with oxidizing materials. To fight fire, use water, foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazard Codes:Xi
Risk Statements:
36:  Irritating to the eyes
Safety Statements:
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
39:  Wear eye/face protection

Specification

Stability and Reactivity of 4-VALEROLACTONE(108-29-2):
Conditions to Avoid:Incompatible materials.  
Incompatibilities with Other Materials:Strong oxidizing agents.
Hazardous Decomposition Products: carbon dioxide,carbon monoxide.