4-METHYL-1-PHENYL-2-PENTANOL

Synonym(s):4-Methyl-1-phenyl-2-pentanol

CAS NO.：7779-78-4
Empirical Formula: C12H18O
Molecular Weight: 178.27
MDL number: MFCD00209515
EINECS: 231-939-6
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-13 11:27:07

What is 4-METHYL-1-PHENYL-2-PENTANOL?

Description

α-Isobutylphenethyl alcohol has a green, floral, somewhat herbaceous odor and a buttery, oily, caramellic flavor. May be prepared by reacting isobutyl aldehyde with benzyl magnesium chloride.

Chemical properties

α-Isobutylphenethyl alcohol has a green floral, fresh, slightly sweet aroma.

The Uses of 4-METHYL-1-PHENYL-2-PENTANOL

α-Isobutylphenethyl alcohol is an excellent modifier in heavy and green floral fragrance types, in Oriental or Chypre bases, etc. It may form a significant basis of Honeysuckle, Freesia or variations of Rose or Muguet. It is used in flavor compositions for imitation Butter, Caramel, Chocolate, Fruit and Spice in concentrations equivalent to 50 ppm in the finished consumer product.

Preparation

By reacting isobutyl aldehyde with benzyl magnesium chloride.

Aroma threshold values

Aroma characteristics at 1.0%: herbaceous, warm celery-like, musk and creamy with a slight floral citrus nuance

Taste threshold values

Taste characteristics at 10 ppm: warm, amber sclarolide herbaceous celery-like with oily and creamy nuances.

Biochem/physiol Actions

Taste at 10 ppm

Synthesis

4-Methyl-1-phenyl-2-pentanol is prepared from benzyl chloride to benzyl magnesium bromide, and then hydrolyzed with isovaleraldehyde after Grignard reaction.

Properties of 4-METHYL-1-PHENYL-2-PENTANOL

Boiling point:	123 °C / 11mmHg
Density	0.95
refractive index	1.5030 to 1.5070
FEMA	2208 \| ALPHA-ISOBUTYLPHENETHYL ALCOHOL
Flash point:	110 °C
storage temp.	Sealed in dry,Room Temperature
solubility	slightly oily liquid. insoluble in water, miscible with alcohol and oils.
form	clear liquid
Specific Gravity	0.94
color	Colorless to Almost colorless
Odor	Green-floral, fresh and slightly sweet-herbaceous odor
JECFA Number	827
EPA Substance Registry System	Benzeneethanol, .alpha.-(2-methylpropyl)- (7779-78-4)

Safety information for 4-METHYL-1-PHENYL-2-PENTANOL

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H302:Acute toxicity,oral H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P337+P313:IF eye irritation persists: Get medical advice/attention.