Product Description

Methyl heptenone（PG）Basic information

Product Name:	Methyl heptenone（PG）
Synonyms:	2-Methyl-6-oxo-2-heptene;2-methylhept-2-en-6-one;2-Oxo-6-methylhept-5-ene;5-Hepten-2-one,6-methyl-;6-methyI-5-hepten-2-one;6-methyl-5-hepten-2-on;6-Methyl-5-hepten-2-one,(2-2-6);6-Methyl-5-hepten-2-one, 97.50%
CAS:	110-93-0
MF:	C8H14O
MW:	126.2
EINECS:	203-816-7
Product Categories:	Alphabetical Listings;Certified Natural ProductsFlavors and Fragrances;Flavors and Fragrances;M-N;C7 to C8;Carbonyl Compounds;Ketones
Mol File:	110-93-0.mol

Methyl heptenone（PG）Chemical Properties

Melting point	-67.1 °C
Boiling point	73 °C18 mm Hg(lit.)
density	0.855 g/mL at 25 °C(lit.)
FEMA	2707 \| 6-METHYL-5-HEPTEN-2-ONE
refractive index	n20/D 1.439(lit.)
Fp	123 °F
storage temp.	Flammables area
solubility	Soluble in methanol and chloroform.
form	neat
Specific Gravity	0.855
PH	6.6 (3g/l, H2O, 25℃)
explosive limit	1.1-7.3%(V)
Water Solubility	insoluble
JECFA Number	1120
BRN	1741705
CAS DataBase Reference	110-93-0(CAS DataBase Reference)
NIST Chemistry Reference	5-Hepten-2-one, 6-methyl-(110-93-0)
EPA Substance Registry System	6-Methyl-5-hepten-2-one (110-93-0)

Methyl heptenone（PG）Safety Information

Risk Statements	10-36/37/38
Safety Statements	16-24/25
RIDADR	UN 1224 3/PG 3
WGK Germany	1
RTECS	MJ9700000
TSCA	Yes
HazardClass	3
PackingGroup	III
HS Code	29141990

Methyl heptenone（PG）Usage And Synthesis

Description	Methyl heptenone（PG）has a strong, fatty, green, citrus-like odor, and a bittersweet taste reminiscent of pear. May be prepared from oil of lemongrass or from citral by refluxing for 12 hours in aqueous solution containing K2C 03, and subsequent distillation and vacuum fractionation; from acetoacetic ester and methylbuten-3-ol-2 with aluminum alcoholate in Carroll’s reaction followed by pyrolysis of the ester.
Chemical Properties	Methyl heptenone（PG）e has a strong, fatty, green, citrus-like odor and bittersweet taste reminiscent of pear.
Chemical Properties	CLEAR SLIGHTLY YELLOW LIQUID
Chemical Properties	Methyl heptenone（PG）is an important intermediate in the synthesis of terpenoids. Its odor properties are not impressive. It occurs in nature as a degradation product of terpenes. (Z)- and (E)-Tagetone, [3588-18-9], [6752-80-3], are major components of tagetes oil. Solanone [1937-54-8] and pseudoionone [141-10-6] are acyclicC13 ketoneswith a terpenoid skeleton. Solanone is one of the flavor-determining constituents of tobacco, and pseudoionone is an intermediate in the synthesis of ionones.
Uses	Organic synthesis, inexpensive perfumes, fla-voring.
Definition	ChEBI: A heptenone that is hept-5-en-2-one substituted by a methyl group at position 6. It is a volatile oil component of citronella oil, lemon-grass oil and palmarosa oil.
Preparation	From oil of lemongrass or from citral by refluxing for 12 hours in aqueous solution containing K2CO3, and subsequent distillation and vacuum fractionation; from acetoacetic ester and methyl-buten-3-ol-2 with aluminum alcoholate in Carroll’s reaction followed by pyrolysis of the ester
Aroma threshold values	Detection: 50 ppb
Taste threshold values	Taste characteristics at 10 ppm: green, vegetative, musty, apple, banana and green bean-like.
Safety Profile	Moderately toxic by ingestion. A skin irritant. Flammable liquid when exposed to heat, sparks, or flame. When heated to decomposition it emits acrid smoke and irritating fumes.