Methyl valeraldehyde

Methyl valeraldehyde Basic information
Product Name:Methyl valeraldehyde
Synonyms:a-Methylvaleraldehyde 2-Methylpentanal;2-Formylpentane;2-Methyl-1-pentanal;2-Methylpental;2-METHYLPENTANAL;2-METHYLPENTALDEHYDE;2-METHYL-N-VALERALDEHYDE;2-METHYLVALERALDEHYDE
CAS:123-15-9
MF:C6H12O
MW:100.16
EINECS:204-605-2
Product Categories:Pharmaceutical Intermediates
Mol File:123-15-9.mol
Methyl valeraldehyde Structure
Methyl valeraldehyde Chemical Properties
Melting point -100℃
Boiling point 119-120 °C(lit.)
density 0.808 g/mL at 25 °C(lit.)
vapor density 3.45 (vs air)
FEMA 3413 | 2-METHYLPENTANAL
refractive index n20/D 1.401(lit.)
Fp 62 °F
solubility Chloroform, Methanol (Slightly)
form clear liquid
color Colorless to Almost colorless
Odorat 10.00 % in dipropylene glycol. ethereal fruity green
Odor Typeethereal
Water Solubility Soluble in water (4.2g/L at 25°C).
Sensitive Air Sensitive
JECFA Number260
BRN 1739423
LogP1.79
CAS DataBase Reference123-15-9(CAS DataBase Reference)
NIST Chemistry ReferencePentanal, 2-methyl-(123-15-9)
EPA Substance Registry SystemPentanal, 2-methyl- (123-15-9)
Safety Information
Hazard Codes F,Xi
Risk Statements 11-36/37/38-52/53-R52/53-R36/37/38-R11
Safety Statements 16-26-36-S36-S26-S16
RIDADR UN 2367 3/PG 2
WGK Germany 1
RTECS RZ6905000
9-23
Autoignition Temperature390 °F
TSCA Yes
HazardClass 3
PackingGroup II
HS Code 29121900
Hazardous Substances Data123-15-9(Hazardous Substances Data)
Toxicitymouse,LD50,oral,> 3200mg/kg (3200mg/kg),Kodak Company Reports. Vol. 21MAY1971,
MSDS Information
ProviderLanguage
2-MethylvaleraldehydeEnglish
SigmaAldrichEnglish
ALFAEnglish
Methyl valeraldehyde Usage And Synthesis
Description2-Methylpentanal has an ethereal, fruity odor. This may be prepared from 2-methylpentanol by catalytic oxidation.
Chemical PropertiesColorless liquid. Soluble in water 0.42% by wt, flash p68F (20C) (OC).
OccurrenceReported found in onion, leek, garlic, milk, roasted peanuts, wheat bread, cooked beef, cured pork, coffee, beer, tea, trassi, rice and mango.
UsesIntermediates for dyes, resins, pharmaceuticals.
Uses2-Methylvaleraldehyde is used as an intermediate to manufacture organic compounds (pharmaceuticals, odorants and flavorings)
PreparationFrom 2-methylpentanol by catalytic oxidation.
DefinitionChEBI: 2-Methylpentanal is a 2-methyl-branched fatty aldehyde.
Aroma threshold valuesDetection: 1.6 to 3.2 ppb
Taste threshold valuesTaste characteristics at 5.0 ppm: vegetative and green with a fruity, grape-like nuance.
Synthesis Reference(s)Synthesis, p. 717, 1985 DOI: 10.1055/s-1985-31327
General DescriptionA colorless liquid. Less dense than water. Flash point near 50°F. Used to make rubber and artificial flavorings.
Air & Water ReactionsHighly flammable. Slightly soluble in water.
Reactivity ProfileMethyl valeraldehyde is an aldehyde. Aldehydes are frequently involved in self-condensation or polymerization reactions. These reactions are exothermic; they are often catalyzed by acid. Aldehydes are readily oxidized to give carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Aldehydes can react with air to give first peroxo acids, and ultimately carboxylic acids. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The addition of stabilizers (antioxidants) to shipments of aldehydes retards autoxidation.
HazardFlammable, dangerous fire risk. Strong irri-tant to skin and mucous membranes.
Health HazardMay cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Fire HazardHIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Flammability and ExplosibilityHighlyflammable
Methyl valeraldehyde Preparation Products And Raw materials
Raw materialsHydrogen–>Aluminium-nickel–>2-METHYL-1-PENTANOL
Preparation ProductsMeprobamate–>2-Methyl-2-propyl-1,3-propanediol–>METHYL 2-METHYLPENTANOATE–>trans-2-Methyl-2-pentenoic acid–>Pentanal, 2-[(dimethylamino)methyl]-2-methyl-

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