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Valeraldehyde

CAS No.110-62-3
Chemical Name:Valeraldehyde
CBNumber:CB9210837
Molecular Formula:C5H10O
Formula Weight:86.13
MOL File:110-62-3.mol

Valeraldehyde Property

Melting point -92 °C
Boiling point 103 °C
Density 0.81 g/mL at 25 °C(lit.)
vapor pressure 36 hPa (20 °C)
FEMA 3098 | VALERALDEHYDE
refractive index n20/D 1.394(lit.)
Flash point 54 °F
storage temp. Store at +2°C to +8°C.
solubility soluble in ethyl alcohol, ethyl ether, and other common organic solvents.
form liquid
color Colorless to Light yellow
Odor at 1.00 % in dipropylene glycol. fermented bready fruity nutty berry
Odor Type fermented
biological source synthetic
Odor Threshold 0.00041ppm
explosive limit 1.7-6.8%(V)
Water Solubility 14 g/L (20 ºC)
Sensitive Air Sensitive
Merck 14,9902
JECFA Number 89
BRN 1616304
Exposure limits TLV-TWA 175 mg/m³ (50 ppm) (ACGIH and OSHA).
Dielectric constant 13.9（Ambient）
Stability Stable. Highly flammable. Incompatible with strong oxidizing agents, acids, strong alkalies, strong reducing agents.
LogP 1.5 at 25℃ and pH7
Substances Added to Food (formerly EAFUS) VALERALDEHYDE
CAS DataBase Reference 110-62-3(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII B975S3014W
NIST Chemistry Reference Pentanal(110-62-3)
EPA Substance Registry System Pentanal (110-62-3)
UNSPSC Code 85151701
NACRES NA.24

Safety

Hazard Codes :F,Xi
Risk Statements :11-38-41-36/37/38
Safety Statements :16-26-33-39-37/39
RIDADR :UN 2058 3/PG 2
OEB :A
OEL :TWA: 50 ppm (175 mg/m3) (Aldehydes)
WGK Germany :1
RTECS :YV3600000
F :10-23
Autoignition Temperature :428 °F
Hazard Note :Irritant/Flammable/Air Sensitive
TSCA :Yes
HazardClass :3
PackingGroup :II
HS Code :29121900
Hazardous Substances Data :110-62-3(Hazardous Substances Data)
Toxicity :LD50 orally in rats: 5.66 ml/kg (Smyth)

NFPA 704:

	3
2		0

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordDanger
Hazard statements H225-H317-H319-H332-H335
Precautionary statements P210-P233-P280-P303+P361+P353-P304+P340+P312-P305+P351+P338

Valeraldehyde Price More Price(15)

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Valeraldehyde Chemical Properties,Usage,Production

Description Valeraldehyde is one of the key volatile flavor compounds identified in cooked rice, beef fish meat and uncured ham. Its smell is described as fermented, bready, fruity, nutty, berry.It is an alkyl aldehyde used in flavoring Compounds, resin chemistry, rubber accelerators.
Chemical Properties Valeraldehyde is a colorless flammable liquid with a strong acrid, pungent odor. At low levels, the taste is warm, slightly fruity and nut-like.The odor threshold is 0.028 ppm. Slightly soluble in water; soluble in alcohol and ether.
Occurrence Valeraldehyde is naturally occurring (e.g., plant volatile). Reported found among the constituents of several essential oils: Brazilian sassafras, Bulgarian rose, Bulgarian clary sage and others. Also in the distillates from leaves of various Eucalyptus species: E. cinereea, E. globulus, E. dives, E. maideni and E. hemilampra. Also reported found in fresh apple, banana, sweet cherry, black currant berries, fresh blackberry, Bantu beer, plum brandy, cardamom, coriander leaf, unprocessed rice, Bourbon vanilla, cooked shrimp, scallop, hog plum and clary sage.
Uses Valeraldehyde is mainly used for hydrogenation to Isoamyl alcohol and oxidation to valeric acid. It can also be used as a raw material for fragrances, resin chemistry, and rubber accelerators.
Application Valeraldehyde is used as a gaseous standard in the study of the sorptive loss pattern for volatile compounds.
Valeraldehyde has been used to study its time-weighted average sampling using solid-phase microextraction (SPME) device.
Valeraldehyde is used in flavoring compounds and as a rubber accelerator.
Valeraldehyde is also used extensively as a natural and synthetic flavoring agent. It is used as a top note for flavor to give identity (fruity, nutty) on first impression and is a component of rose oil used to flavor foods, beverages and chewing tobacco (Furia, 1972; Rogers, 1981; NLM, 1996).
Valeraldehyde is mainly used as a chemical intermediate. As a starting material in industrial organic synthesis, it is hydrogenated to 1-pentanol, oxidized to valeric acid, and aminated to 1-aminopentane (Falbe et al., 1985; NLM, 1996).
Preparation Valeraldehyde can be prepared by oxidation of the corresponding alcohol, 1-pentanol or by reduction of n-valeric acid (Opdyke, 1979; Lewis, 1993). Valeraldehyde is one of a number of aliphatic aldehydes industrially prepared by the oxo process, which involves the reaction of olefins with carbon monoxide and hydrogen in the presence of a catalyst. Use of a cobalt carbonyl complex as catalyst required high pressure in an older process, which has been largely replaced by a low-pressure process based on rhodium complex catalysts, such as a tris (alkyldiarylphosphine) rhodium carbonyl hydride.
Definition ChEBI: Valeraldehyde is a saturated fatty aldehyde composed from five carbons in a straight chain. It has a role as a plant metabolite.
Aroma threshold values Detection: 12 to 100 ppb
Taste threshold values Taste characteristics at 25 ppm: winey, fermented, bready and cocoa chocolate notes.
General Description A colorless liquid. Slightly soluble in water and less dense than water. Flash point 54°F. Vapors heavier than air. Used to make artificial flavorings and rubber.
Air & Water Reactions Highly flammable. Slightly soluble in water. Valeraldehyde may be sensitive to prolonged exposure to air.
Reactivity Profile 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. Valeraldehyde is incompatible with oxidizing agents, strong bases and strong reducing agents.
Health Hazard n-Valeraldehyde is a moderate skin andeye irritant. At a high concentration theirritation may be severe; 100 mg/day wasseverely irritating on rabbits’ eyes. Pure liquidcaused severe irritation to guinea pigskin. The systemic toxicity of valeraldehydeis very low.
LD50 value, skin (rabbits): 4857 mg/kg
LD50 value, oral (rats): 3200 mg/kg
Inhalation toxicity is very low. Exposure to4000 ppm for air was lethal to rats.
Fire Hazard HIGHLY 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.
Safety Profile Moderately toxic by ingestion. Mddly toxic by inhalation and s h contact. A severe eye and skin irritant. A very dangerous fire hazard when exposed to heat or flame. %%en heated to decomposition it emits acrid smoke and irritating fumes. See also ALDEHYDES.
Potential Exposure Valeraldehyde is used in food flavorings; in resin chemistry. It is also used in the acceleration of rubber vulcanization.
Carcinogenicity n-Valeraldehyde caused chromosomal and DNA effects in mammalian cells in culture but was not mutagenic in an Ames bacterial test.
Shipping UN2058 Valeraldehyde, Hazard Class: 3; Labels: 3-Flammable liquid.
Purification Methods Purify pentanal via the bisulfite derivative (see 2-butanone above for the preparation and decomposition of the bisulfite derivative). [Birrell & Trotman-Dickinson J Chem Soc 2059 1960, Beilstein 1 H 676, 1 IV 3268.] The 2,4-dinitrophenylhydrazone [2057-84-3] M 266.3 has m 103-105o (from EtOH). [Beilstein 15 III/IV 429.]
Incompatibilities Vapor may form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, caustics, amines.
Toxics Screening Level The initial threshold screening level (ITSL) for Valeraldehyde is 1760 μg/m3 based on an 8 hour averaging time.
Waste Disposal Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.