Trimethylhydroquinone
Synonym(s):1,4-Dihydroxy-2,3,5-trimethylbenzene;3,6-Dihydroxypseudocumene
- CAS NO.:700-13-0
- Empirical Formula: C9H12O2
- Molecular Weight: 152.19
- MDL number: MFCD00002346
- EINECS: 211-838-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-10-29 11:48:30
What is Trimethylhydroquinone?
Chemical properties
off-white, tan or orange powder
The Uses of Trimethylhydroquinone
Trimethylhydroquinone is used for synthesizing vitamin E and used as medical intermediate.
The Uses of Trimethylhydroquinone
Trimethylhydroquinone is a key precursor for the synthesis of tocopherols (vitamin E) and (±)-madindolines.
Definition
ChEBI: 2,3,5-trimethylhydroquinone is a member of the class of hydroquinones that is hydroquinone substituted by methyl groups at positions 2, 3 and 5. It is a member of hydroquinones and a methylbenzene.
Synthesis Reference(s)
Chemical and Pharmaceutical Bulletin, 16, p. 378, 1968 DOI: 10.1248/cpb.16.378
Safety Profile
Experimental reproductive effects. When heated to decomposition it emits acrid smoke and irritating fumes.
Purification Methods
Recrystallise the hydroquinone from water, under anaerobic conditions. [Beilstein 6 H 931, 6 IV 5997.]
Properties of Trimethylhydroquinone
Melting point: | 169-172 °C (lit.) |
Boiling point: | 295 °C (759.8513 mmHg) |
Density | 0.9595 (rough estimate) |
vapor pressure | 0-0.017Pa at 20-50℃ |
refractive index | 1.4464 (estimate) |
Flash point: | 191 °C |
storage temp. | Inert atmosphere,Room Temperature |
solubility | methanol: 0.1 g/mL, clear |
form | Crystalline Powder |
pka | 11.28±0.28(Predicted) |
color | Beige |
Water Solubility | 2 g/L (20 ºC) |
BRN | 1909183 |
Stability: | Stable. Combustible. Incompatible with strong oxidizing agents. |
CAS DataBase Reference | 700-13-0(CAS DataBase Reference) |
NIST Chemistry Reference | Trimethylhydroquinone(700-13-0) |
EPA Substance Registry System | 1,4-Benzenediol, 2,3,5-trimethyl- (700-13-0) |
Safety information for Trimethylhydroquinone
Signal word | Danger |
Pictogram(s) |
Corrosion Corrosives GHS05 Exclamation Mark Irritant GHS07 Environment GHS09 |
GHS Hazard Statements |
H315:Skin corrosion/irritation H317:Sensitisation, Skin H318:Serious eye damage/eye irritation H332:Acute toxicity,inhalation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation H410:Hazardous to the aquatic environment, long-term hazard |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Trimethylhydroquinone
InChIKey | AUFZRCJENRSRLY-UHFFFAOYSA-N |
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