Hydroquinone
SIAL/H17902 - ReagentPlus®, 99%
Synonym: 1,4-Benzenediol; 1,4-Dihydroxybenzene; HQ
CAS Number: 123-31-9
Empirical Formula (Hill Notation): C6H6O2
Molecular Weight: 110.11
EC Number: 204-617-8
MDL Number: MFCD00002339
Linear Formula: C6H4-1,4-(OH)2
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: H17902-100G
This image depicts SKU: H17902-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: H17902-500G
This image depicts SKU: H17902-500G
| assay | 99% |
| autoignition temp. | 930 °F |
| bp | 285 °C (lit.) |
| impurities | ≤0.6% water (Karl Fischer) |
| InChI | 1S/C6H6O2/c7-5-1-2-6(8)4- |
| InChI key | QIGBRXMKCJKVMJ-UHFFFAOYSA |
| mp | 171-175 °C |
| 172-175 °C (lit.) | |
| product line | ReagentPlus® |
| Quality Level | 200  |
| SMILES string | Oc1ccc(O)cc1 |
| vapor density | 3.81 (vs air) |
| vapor pressure | 1 mmHg ( 132 °C) |
| Application: | Hydroquinone may be used to synthesize bicyclic phosphonate derivative by reacting with phosphonic dichloride. |
| General description: | Hydroquinone (HQ), a phenolic compound, is also known as 1,4-dihydroxy-benzene. The detection of HQ along with resorcinol and phenol in air samples by synchronous fluorescence method has been proposed. The electrochemical oxidation of HQ has been studied using cyclic and differential pulse voltammetry. Its enthalpies of sublimation, vaporization and fusion have been reported. |
| Legal Information: | ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany |
| Packaging: | 100, 500 g in poly bottle |
| Packaging: | 2 kg in poly drum |
| Symbol |     GHS05,GHS07,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H302 - H317 - H318 - H341 - H351 - H410 |
| Precautionary statements | P273 - P280 - P301 + P312 - P302 + P352 - P305 + P351 + P338 - P308 + P313 |
| Hazard Codes | Xn,N |
| Risk Statements | 22-40-41-43-50-68 |
| Safety Statements | 26-36/37/39-61 |
| RIDADR | UN 3077 9 / PGIII |
| WGK Germany | WGK 3 |
| Flash Point(F) | 329.0 °F - closed cup |
| Flash Point(C) | 165 °C - closed cup |
| Purity | 99% |
| bp | 285 °C (lit.) |
| mp | 171-175 °C; 172-175 °C (lit.) |
| UNSPSC | 12352100 |