High Purity Synthetic Essential Spices Guaiacol 2-Methoxyphenol CAS 90-05-1 Light Yellow Liquild
Quick Details:
CAS No.:90-05-1
MF:C7H8O2
EINECS No.:201-964-7
Place of Origin:ShenZhen, China (Mainland)
Type:Pharmaceutical Intermediates
Grade Standard:Medicine Grade
Brand Name:SENDI
Model Number:Top Grade
Purity:99%min
Color: Light Yellow Liquild
Guaiacol Specification
Items | Specifications |
Appearance | Colorless to light yellow oily liquid or fused solid |
UN No. | 2430 |
Assay | ≥99.99% |
S.P.(°C) | ≥26.5 |
Loss on drying | 0.50% |
H.B.M | 0.50% |
Anisole | No detected |
Introductions:
Appearance: yellow liquid
Density: 1.129 g / mL at 25 ° C (lit.)
Melting point: 26-29 ° C (lit.)
Freezing point: 28 ° C
Boiling point: 205 ° C
Refractive Index: n20 / D 1.543 (lit.)
Water Solubility: 17 g / L (15 ºC)
Stability: Stable, but air and light sensitive.
Combustible. mm Hg at 25 ° C Vapor density: 4.27 (vs air)
Symbol:
GHS07
Signal word: warning
Hazard Statements: H302; H315; H319
Cautionary Statements: P280; P301 + P312 + P330; P305 + P351 + P338; P337 + P313
Packaging level: II
Hazard category: 6.1 (b)
Customs code: 2909500000
Dangerous goods transport code: 2810
WGK Germany: 1
Hazard Classification: R22; R36 / 38
Safety Instructions: S26
RTECS number: SL7525000
Dangerous goods symbol: Xn
Product Usage
Used as analytical reagent;
For medicine, dyes and spices intermediates;
GB 2760-96 provides for the temporary use of flavors. Mainly used for the preparation of coffee, vanilla, tobacco and tobacco and other flavor. ; In medicine for the manufacture of guaiacol sulfonate, used in the perfumery industry to manufacture vanillin and artificial musk.
Guaiacol Application：
Guaiacol is a precursor to various flavorants, such as eugenol and vanillin.Its derivatives are used medicinally as an expectorant, antiseptic, and local anesthetic. It also can be used as an indicator in chemical reactions that produce oxygen. When oxygen binds to it, the complex turns yellowish brown and absorbs light maximally at about 470 nm
Synthetic essential spices | ||||
| cinnamon series | ||||
| Product name | CAS NO. | FEMA | ||
| Cinnamyl alcohol | 104-54-1 | 2294 | ||
| Cinnamaldehyde | 104-55-2 | 2286 | ||
| alpha-Methylcinnamaldehyde | 101-39-3 | 2697 | ||
| Methyl cinnamate | 103-26-4 | 2698 | ||
| Isobutyl cinnamate | 122-67-8 | 2193 | ||
| Butyl cinnamate | 538-65-8 | 2192 | ||
| Cinnamic acid | 621-82-9 | 2288 | ||
| Isobutyl cinnamate | 122-67-8 | 2193 | ||
| Phenethyl cinnamate | 103-53-7 | 2863 | ||
| Ethyl cinnamate | 103-36-6 | 2430 | ||
| Cinnamyl acetate | 103-54-8 | 2293 | ||
| Other series | ||||
| Product name | CAS NO. | FEMA | ||
| Benzyl alcohol | 100-51-6 | 2137 | ||
| 3,5-Dimethoxy-4-hydroxybenzaldehyde | 134-96-3 | 4049 | ||
| Benzyl benzoate | 120-51-4 | 2138 | ||
| Vanillin | 121-33-5 | 3107 | ||
| Borneol | 507-70-0 | 2157 | ||
| Guaiacol | 90-05-1 | 2532 | ||
History
Guajacol was first produced by Otto Unverdorben in 1826 by distillation of guaiacum resin.
Occurrence
Guajacol is found in wood tarry red and in wood tars, the largest content is beech wood, as well as in the guaiac resin. Guaiacol is among other phenols formed by thermal or microbial degradation of lignin or phenolic acids (eg, ferulic acid) and is therefore found in many foods, especially in smoked products. Guajacol is one of the flavorings of whiskey, and it may be responsible for the cork in the wine.
Properties
Guajacol smells smoky-medicinal and tastes sweet. The aroma wave in water is 3 ppb. With its strong hints of smoke Guajacol contributes significantly to the coffee aroma and flavor of smoked foods. The vapor pressure function results according to Antoine according to ln (P) = A- (B / (T + C)) (P in kPa, T in K) with A = 13.6745, B = 3378.850 and C = -104.630 im Temperature range from 373 to 463 K. [12] The enthalpy of evaporation at the boiling point is 52.7 kJ · mol-1.
With iron (III) ions (ferric chloride) a green color is observed.
The methoxy group has little influence on the acidity of the phenolic OH group, the pKs value has only a very small difference to the phenol.
Use
Guajacol is used in the fragrance industry for the production of vanillin and eugenol. In the pharmaceutical industry, it is used, for example, in medicaments as expectorant in bronchial diseases (guaifenesin). In coating technology, it is used for the "anti-skinning" properties of inks and varnishes.
