2-METHYLUNDECANAL
- CAS No.
- 110-41-8
- Chemical Name:
- 2-METHYLUNDECANAL
- Synonyms
- MNA;ALDEHYDE C-12 MNA;ALDEHYDE C-12;METHYL NONYL ACETALDEHYDE;FEMA 2794;methyln-nonylaceticaldehyde;FEMA 2749;AldehydeMNA;aldehydem.n.a.;Aldehyde M.N.A.
- CBNumber:
- CB3113392
- Molecular Formula:
- C12H24O
- Molecular Weight:
- 184.32
- MOL File:
- 110-41-8.mol
- Modify Date:
- 2024/8/2 15:22:02
| Boiling point | 171 °C(lit.) |
|---|---|
| Density | 0.83 g/mL at 25 °C(lit.) |
| vapor pressure | 2.4Pa at 20℃ |
| refractive index |
n |
| FEMA | 2749 | 2-METHYLUNDECANAL |
| Flash point | 200 °F |
| Odor | at 1.00 % in dipropylene glycol. fresh amber aldehydic moss citrus tuberose metallic waxy coumarinic |
| Odor Type | aldehydic |
| Water Solubility | 1.3mg/L at 20℃ |
| JECFA Number | 275 |
| InChI | InChI=1S/C12H24O/c1-3-4-5-6-7-8-9-10-12(2)11-13/h11-12H,3-10H2,1-2H3 |
| InChIKey | NFAVNWJJYQAGNB-UHFFFAOYSA-N |
| SMILES | C(=O)C(C)CCCCCCCCC |
| LogP | 4.9 at 35℃ |
| CAS DataBase Reference | 110-41-8(CAS DataBase Reference) |
| EPA Substance Registry System | Undecanal, 2-methyl- (110-41-8) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS07,GHS09 |
|---|---|
| Signal word | Warning |
| Hazard statements | H400-H317-H410-H315 |
| Precautionary statements | P273-P391-P501-P273-P391-P501-P264-P280-P302+P352-P321-P332+P313-P362-P261-P272-P280-P302+P352-P333+P313-P321-P363-P501 |
| WGK Germany | 1 |
| RTECS | YQ1509000 |
| Toxicity | The acute oral LD50 value was reported as > 5 g/kg in the rat . The acute dermal LD50 for sample no. 71-16 was reported to be > 10 g/kg in the rabbit |
2-METHYLUNDECANAL Chemical Properties,Uses,Production
Description
2-Methylundecanal has a characteristic fatty odor assuming a floral note on dilution. It has an acrid, fatty unpleasant flavor at high levels. At low levels, the flavor is honey- and nut-like. It may be prepared by cracking the corresponding glycidic acid; from α-nonyl acrolein; from methyl nonyl ketone and ethyl monochloroacetate in the presence of sodium ethylate.
Chemical Properties
2-Methylundecanal has a characteristic fatty odor assuming a floral note on dilution. At high levels, it has an acrid, fatty, unpleasant flavor. At low levels, the flavor is honey and nut-like.
Occurrence
Reported found in kumquat peel oil.
Uses
Perfumery, flavoring.
Preparation
2-Methylundecanal is reported as being
found in nature. It is a colorless liquid, with an odor markedly different from that
of the isomeric dodecanal. It has a fatty odor with incense and ambergris notes.
2-Methylundecanal is produced by two routes:
1) 2-Undecanone is converted into its glycidate by reaction with an alkyl
chloroacetate. Saponification of the glycidate, followed by decarboxylation,
yields 2-methylundecanal.
2) The second synthesis is based on the conversion of undecanal into 2-
methyleneundecanal by reaction with formaldehyde in the presence of
catalytic amounts of amines. Hydrogenation of 2-methyleneundecanal
yields methylnonylacetaldehyde (MNA). A convenient process starts
from 1-decene: hydroformylation gives a mixture consisting mainly of
undecanal and 2-methyldecanal. Reaction of the crude product with
formaldehyde in the presence of dibutylamine yields a mixture containing
over 50% 2-methyleneundecanal. After hydrogenation of the double bond,
pure 2-methylundecanal is separated from the by-products by fractional
distillation.
In comparison with other fatty aldehydes, 2-methylundecanal is used in perfumery
in rather large amounts to impart conifer notes, particularly fir impressions,
but frequently also in fantasy compositions.
Safety Profile
Low toxicity by ingestion and skin contact. When heated to decomposition it emits acrid smoke and irritating fumes.
Metabolism
See monograph on aldehyde C-8*.
2-METHYLUNDECANAL Preparation Products And Raw materials
Raw materials
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chevron_rightPreparation Products
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Nagar Haveli Perfumes & Aromatics | +917506551149 | Mumbai, India | 230 | 58 | Inquiry |
| HJ AROCHEM | +91-8690768060 +91-9724420086 | Ahmedabad, India | 171 | 58 | Inquiry |
| Privi Speciality Chemicals Ltd. | +91-2233043500 +91-2233043500 | Mumbai, India | 63 | 58 | Inquiry |
| Hebei Mojin Biotechnology Co., Ltd | +86 13288715578 +8613288715578 | China | 12447 | 58 | Inquiry |
| Hebei Kingfiner Technology Development Co.Ltd | +86-15532196582 +86-15373005021 | China | 2989 | 58 | Inquiry |
| JINING XINHE CHEMICAL CO., LTD | +8615318402391 | China | 808 | 58 | Inquiry |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | China | 21667 | 55 | Inquiry |
| SHANDONG ZHI SHANG CHEMICAL CO.LTD | +86 18953170293 | China | 2931 | 58 | Inquiry |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | China | 49392 | 58 | Inquiry |
| career henan chemical co | +86-0371-86658258 +8613203830695 | China | 29825 | 58 | Inquiry |
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