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Phenylacetaldehyde

Phenylacetaldehyde structure

Phenylacetaldehyde 

structure
  • CAS No:

    122-78-1

  • Formula:

    C8H8O

  • Chemical Name:

    Phenylacetaldehyde

  • Synonyms:

    Benzeneacetaldehyde;Acetaldehyde,phenyl-;Phenylacetaldehyde;Phenylacetic aldehyde;α-Tolualdehyde;α-Toluic aldehyde;2-Phenylethanal;Phenylethanal;α-Phenylacetaldehyde;Phenacetaldehyde;NSC 406309;Hyacinthin;Benzylcarboxaldehyde;2170235-75-1

  • Categories:

    Cosmetic Ingredient  >  Perfuming

Description

Phenylacetaldehyde has been identified in many essential oils and as a volatile constituent of foods. It is a colorless liquid with a sweet, green odor, reminiscent of hyacinth. Since it readily undergoes oxidation and polymerizes, it must be stabilized by addition of antioxidants and by dilution with, for example, diethyl phthalate before use in compositions. Phenylacetaldehyde has a harsh, green odor reminiscent of hyacinth on dilution. It has an unpleasant, pungent, bitter flavor, turning


Phenylacetaldehyde is an organic compound used in the synthesis of fragrances and polymers.


Solid|Colourless to slighty yellow oily liquid; very powerful and penetrating pungent green floral and sweet odour of hyacinth type


Phenylacetaldehyde is an aldehyde that consists of acetaldehyde bearing a methyl substituent; the parent member of the phenylacetaldehyde class of compounds. It has a role as a human metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a mouse metabolite. It is an alpha-CH2-containing aldehyde and a member of phenylacetaldehydes.

Phenylacetaldehyde Basic Attributes

120.15

120.15

385791

204-574-5

U8J5PLW9MR

406309

DTXSID3021483

2912299000

Characteristics

17.1

1.78

Clear colorless to pale yellow Liquid

1.0252 g/cm3 @ Temp: 20 °C

33.5 °C

195 °C

188 °F

n 20/D 1.535(lit.)

H2O: 2.210 g/L (25 ºC)

2-8°C

0.39 mmHg

Oral-rat LD50: 1550 mg/kg; Oral-Mouse LD50: 3890 mg/kg

More flammable liquid; burning produces irritating fumes

Safety Information

UN11703/PG2

2

22-36/37/38-43-11

26-36-37-24-16-7

CY1420000

Xn,F

Ventilated, low temperature and dry

Stable. Combustible. Incompatible with strong oxidizing agents, strong bases.

P261-P305 + P351 + P338

H302-H315-H319-H335

UN 1170 3/PG 2

|Danger|H302 (99.83%): Harmful if swallowed [Warning Acute toxicity, oral]|P260, P261, P264, P270, P272, P280, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P330, P333+P313, P363, P405, and P501|Aggregated GHS information provided by 1729 companies from 18 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Toxicity

moderately toxic

Name Type of Test Exposure Route Species Observed Dose/Duration Toxic Effects Reference
SKIN/EYE IRRITATION DATA Standard Draize test Administration onto the skin Human 2%/48H -- Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 17,377,1979
SKIN/EYE IRRITATION DATA LD50 - Lethal dose, 50 percent kill Oral Rodent - rat 1550 mg/kg Details of toxic effects not reported other than lethal dose value-- Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 17,377,1979
SKIN/EYE IRRITATION DATA LD50 - Lethal dose, 50 percent kill Oral Rodent - mouse 3890 mg/kg Details of toxic effects not reported other than lethal dose value-- Voprosy Pitaniya. Problems of Nutrition. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-10, 1932-41; V.11- 1952- Volume(issue)/page/year: 33(5),48,1974

Drug Information

Phenylacetaldehyde is a known human metabolite of fentanyl.

phenylacetaldehyde

Phenylacetaldehyde Use and Manufacturing

Methods of Manufacturing

There are various preparation methods: 2-phenylacetaldehyde can be prepared by catalytic reduction of phenylacetic acid, catalytic oxidation of β-phenylethanol and styrene, epoxy styrene, cinnamic acid and its esters as raw materials. Industrial production is obtained by oxidizing β-phenylethanol in the presence of copper with air under heating. The reaction is exothermic, and side reactions such as oxidation of phenylacetaldehyde to phenylacetic acid and polymerization of phenylacetaldehyde occur simultaneously. The content of aldehyde in the oxidation product is about 50%. The crude product obtained is washed with water and distilled under reduced pressure to obtain a finished product.

Uses

In perfumery; intermediate in organic synthesis.

Benzeneacetaldehyde: ACTIVE

Food additives -> Flavoring Agents|Flavouring Agent -> FLAVOURING_AGENT; -> JECFA Functional Classes|Flavoring Agents -> JECFA Flavorings Index

Flavoring Agents|Flavouring Agent -> FLAVOURING_AGENT;

Computed Properties

Molecular Weight:120.15
XLogP3:1.8
Hydrogen Bond Acceptor Count:1
Rotatable Bond Count:2
Exact Mass:120.057514874
Monoisotopic Mass:120.057514874
Topological Polar Surface Area:17.1
Heavy Atom Count:9
Complexity:82.6
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

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