Name | 8,8-dimethoxy-2,6-dimethyloctan-2-ol |
Synonyms | FEMA 2585 HYDRCITRONELLAL DIMETHYL ACETAL HYDROXYCITRONELLAL DIMETHYL ACETAL 8,8-dimethoxy-2,6-dimethyloctan-2-ol 1,1-DIMETHOXY-3 7-DIMETHYLOCTAN-7-OL 8,8-DIMETHOXY-2,6-DIMETHYL-OCTAN-2-OL 7-HYDROXY-3 7-DIMETHYL-1-OCTANAL DIMETHYLACETAL (R,S)-7-hydroxy-3,7-dimethyl-octanal-dimethylacetal |
CAS | 141-92-4 |
EINECS | 205-510-9 |
InChI | InChI=1/C12H26O3/c1-10(9-11(14-4)15-5)7-6-8-12(2,3)13/h10-11,13H,6-9H2,1-5H3 |
Molecular Formula | C12H26O3 |
Molar Mass | 218.33 |
Density | 0.928g/mLat 25°C(lit.) |
Boling Point | 252°C(lit.) |
Flash Point | >230°F |
JECFA Number | 612 |
Vapor Presure | 0.00052mmHg at 25°C |
Storage Condition | Room Temprature |
Refractive Index | n20/D 1.442(lit.) |
Physical and Chemical Properties | Colorless or slightly yellow transparent, oily liquid. With light flower aroma and melon-like aroma. Boiling point 252 ° C soluble in ethanol, propylene glycol, most non-volatile oils and mineral oil, insoluble in glycerol and water. |
Hazard Symbols | Xi - Irritant |
Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
WGK Germany | 2 |
RTECS | RG7900000 |
Toxicity | Both the acute oral LD50 value in rats and the acute dermal LD50 value in rabbits exceeded 5 g/kg (Shelanski, 1973). |
FEMA | 2585 | HYDROXYCITRONELLAL DIMETHYL ACETAL |
NIST chemical information | Information provided by: webbook.nist.gov (external link) |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
content analysis | method 1 accurately weigh about 1.5g of sample, and then measure according to acetal determination method (OT-2). The reflux time was changed to 5~10min. Record the number of ml of 0.5mol/L potassium hydroxide ethanol solution consumed and convert it to the consumption per g of sample (A). In addition, 5g of a sample is accurately weighed, put into a separatory funnel, and then analyzed according to the method in aldehyde and ketone determination method (OT-7), the ml of 0.5mol/L hydrochloric acid consumed is recorded, and converted into the consumption per g sample (B). Finally, the percentage of hydroxycitronellal dimethylal (C12 H26O3) is obtained according to the formula of 10.92(A-B). Method 2 was determined by GT-10 -4 gas chromatography with non-polar column method. |
toxicity | GRAS(FEMA). |
usage limit | FEMA(mg/kg): soft drink 1.0; Cold drink 0.5; Candy 24; Baked food 0.50~20. Moderate limit (FDA § 172.515,2000). |
use | spices. Mainly used to prepare melon, citrus and cherry flavors. |
production method | mix methanol containing 1% hydrogen chloride with hydroxycitronellal, leave it at room temperature for 3 days, neutralize it with potassium hydroxide, remove the excess hydroxycitronellal with barium p-aminobenzenesulfonate 10% solution, and add water to the residue to precipitate the finished product. |