龙胆
((1S)-endo)-(-)-borneol
CAS: 507-70-0
Molecular Formula: C10H18O
龙胆 - Names and Identifiers
| Name | ((1S)-endo)-(-)-borneol |
| Synonyms | Borneol Bingpian 2-Borneol DL-borneol Bornel (crystal) 2-Bornanol, endo- ((1S)-endo)-(-)-borneol 1,7,7-trimethylbicyclo[2.2.1]hept-2-en-2-ol Endo-1,7,7-trimethyl-bicyclo[2.2.1]heptan-2-ol 1,7,7-trimethyl-endo-Bicyclo[2.2.1]heptan-2-ol 1,7,7-Trimethyl-bicyclo(2.2.1)heptan-2-ol, endo- (1R,2S,4R)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol (1R,2S,4R)-rel-1,7,7-TriMethylbicyclo[2.2.1]heptan-2-ol Endo-1,7,7-trimethyl-bicyclo[2.2.1]heptan-2-ol2-Camphanol |
| CAS | 507-70-0 |
| EINECS | 208-080-0 |
| InChI | InChI=1/C10H16O/c1-9(2)7-4-5-10(9,3)8(11)6-7/h6-7,11H,4-5H2,1-3H3 |
| InChIKey | DTGKSKDOIYIVQL-WEDXCCLWSA-N |
龙胆 - Physico-chemical Properties
| Molecular Formula | C10H18O |
| Molar Mass | 154.25 |
| Density | 1.011 |
| Melting Point | 206-209°C |
| Boling Point | 210°C(lit.) |
| Specific Rotation(α) | -0.5～+0.5゜(20℃/D)(c=5,C2H5OH) |
| Flash Point | 150°F |
| JECFA Number | 1385 |
| Water Solubility | insoluble |
| Vapor Presure | 33.5 mm Hg ( 25 °C) |
| Vapor Density | 5.31 (vs air) |
| Appearance | powder to crystal |
| Color | White to Almost white |
| Merck | 14,1338 |
| pKa | 15.36±0.60(Predicted) |
| Stability | Stable. Highly flammable. Incompatible with strong oxidizing agents. |
| Refractive Index | 1.4831 (estimate) |
| Physical and Chemical Properties | Colorless or white transparent Flake brittle crystal, or crystalline powder and block. Strong pine aroma, camphor and mint odor. Heat can be sublimated, room temperature can be slowly volatile, there is a burning sensation. Melting point 208 ° C (racemate), boiling point 212 ° C, flash point 65.6 ° C, the relative density of 1.011(20 ° C). Insoluble in water, soluble in ethanol, ether and chloroform. Natural levorotatory exists in nutmeg, cardamom, ginger and so on, the right-handed exists in coriander seeds, citronella and so on, the racemate exists in camphor, rosemary, thyme and so on. |
| Use | Used as biochemical reagents, also used in the pharmaceutical industry |
龙胆 - Risk and Safety
| Risk Codes | R11 - Highly Flammable R43 - May cause sensitization by skin contact R22 - Harmful if swallowed |
| Safety Description | S16 - Keep away from sources of ignition. S36/37 - Wear suitable protective clothing and gloves. |
| UN IDs | UN 1312 4.1/PG 3 |
| WGK Germany | 2 |
| RTECS | DT5095000 |
| HS Code | 29061990 |
| Hazard Class | 4.1 |
| Packing Group | III |
龙胆 - Upstream Downstream Industry
| Raw Materials | Oil of turpentine |
龙胆 - Nature
Open Data Verified Data
colorless plate-like crystals. Has a cool camphor odor. Insoluble in water, soluble in ethanol, ethyl ether, ethyl acetate and acetone and other organic solvents. Heat can be sublimed, room temperature can be slowly volatile, there is a burning sensation. Natural products are divided into d-borneol and I-borneol. d borneol mainly exists in coriander seeds, citronella and other natural plant essential oils. I-borneol mainly exists in nutmeg, cardamom, ginger and other plant essential oils. Racemate mainly exists in camphor, rosemary, thyme and other essential oils. Molecular weight 154.25, melting point 208 ℃, boiling point 212 ℃, relative density of 1. 011. d-borneol than the optical rotation was 34. -37.7., The specific optical rotation of I-borneol was -34. -- 37.7..
Last Update：2024-01-02 23:10:35
龙胆 - Preparation Method
Open Data Verified Data
- camphor reduction method: camphor is dissolved in ethanol and reduced with metallic sodium (Birch reduction), or camphor is subjected to catalytic hydrogenation using copper, nickel, or the like as a catalyst to obtain borneol.
- hydroxylation of a-pinene.
Last Update：2022-01-01 11:14:43
龙胆 - Use
Open Data Verified Data
can be used as a raw material for the preparation of food flavor. Mainly used for the preparation of mint, lime, nuts and other spices. It can also be used as a pharmaceutical raw material.
Last Update：2022-01-01 11:14:44
龙胆 - Reference Information
| FEMA | 2157 | BORNEOL |
| LogP | 3.6 at 20℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| traits | colorless or white transparent flake crisp crystal |
| properties | borneol is colorless or white transparent flake crisp crystal, or crystalline powder and blocks. It is soluble in ethanol, chloroform and gasoline, but almost insoluble in water. It has a strong fragrance of pine, camphor and mint. It can sublimate when heated, and it can volatilize slowly at room temperature, with a burning sensation. Melting point is 208 ℃, boiling point is 212 ℃ |
| use | edible spices. Mainly used to prepare mint, white lemon and nuts and other flavors. It is widely used in the pharmaceutical industry. GB 2760 a 1996 stipulates that edible spices are allowed to be used. Mainly used to prepare mint, white lemon and nuts and other flavors. It is used as a biochemical reagent and also used in the pharmaceutical industry It is widely used in the preparation of rosemary, lavender and other flavors, and used in pharmaceuticals, etc. It is used in the manufacture of borneol esters, spices, etc. |
| identification test | when the sample is mixed and ground with the same amount of thymol, it becomes liquid. Take 0.5g of sample, add 2-3 drops of ether, add 4ml of 20% potassium dichromate solution and 0.3ml of concentrated sulfuric acid after dissolution, shake and heat in warm water, the liquid should be reddish brown, and the specific aroma disappears to produce camphor smell. |
| toxicity | LD502000 mg/kg (rabbit, oral). GRAS(FEMA). |
| usage limit | FEMA(mg/kg): soft drink 0.25~1.4; Cold drink 1.4; Candy 3.7; Baked food 5.1; Gum sugar 0.30; |
| Production method | It is prepared by dissolving camphor in ethanol with metallic sodium or reduction with new ecological hydrogen. It is made of pinene treated with hydrochloric acid, magnesium powder, etc. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 15:16:44
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Raw Materials for 龙胆