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Product Name: |
Methyl heptenone（PG） |
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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% |
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CAS: |
110-93-0 |
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MF: |
C8H14O |
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MW: |
126.2 |
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EINECS: |
203-816-7 |
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Product Categories: |
Alphabetical Listings;Certified Natural ProductsFlavors and Fragrances;Flavors and Fragrances;M-N;C7 to C8;Carbonyl Compounds;Ketones |
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Mol File: |
110-93-0.mol |
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Melting point |
-67.1 °C |
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Boiling point |
73 °C18 mm Hg(lit.) |
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density |
0.855 g/mL at 25 °C(lit.) |
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FEMA |
2707 | 6-METHYL-5-HEPTEN-2-ONE |
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refractive index |
n20/D 1.439(lit.) |
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Fp |
123 °F |
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storage temp. |
Flammables area |
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solubility |
Soluble in methanol and chloroform. |
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form |
neat |
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Specific Gravity |
0.855 |
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PH |
6.6 (3g/l, H2O, 25℃) |
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explosive limit |
1.1-7.3%(V) |
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Water Solubility |
insoluble |
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JECFA Number |
1120 |
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BRN |
1741705 |
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CAS DataBase Reference |
110-93-0(CAS DataBase Reference) |
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NIST Chemistry Reference |
5-Hepten-2-one, 6-methyl-(110-93-0) |
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EPA Substance Registry System |
6-Methyl-5-hepten-2-one (110-93-0) |
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Risk Statements |
10-36/37/38 |
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Safety Statements |
16-24/25 |
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RIDADR |
UN 1224 3/PG 3 |
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WGK Germany |
1 |
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RTECS |
MJ9700000 |
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TSCA |
Yes |
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HazardClass |
3 |
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PackingGroup |
III |
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HS Code |
29141990 |
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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. |
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Chemical Properties |
Methyl heptenone（PG）e has a strong, fatty, green, citrus-like odor and bittersweet taste reminiscent of pear. |
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Chemical Properties |
CLEAR SLIGHTLY YELLOW LIQUID |
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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. |
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Uses |
Organic synthesis, inexpensive perfumes, fla-voring. |
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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. |
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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 |
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Aroma threshold values |
Detection: 50 ppb |
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Taste threshold values |
Taste characteristics at 10 ppm: green, vegetative, musty, apple, banana and green bean-like. |
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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. |
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Preparation Products |
Citral-->Linalool-->GERANIC ACID-->6-AMINO-2-METHYL-2-HEPTANOL |
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Raw materials |
Isoprene |
