Benzene, 1,3-bis(chloromethyl)-
α,α'-Dichloro-m-xylene
CAS: 626-16-4
Molecular Formula: C8H8Cl2
Benzene, 1,3-bis(chloromethyl)- - Names and Identifiers
| Name | α,α'-Dichloro-m-xylene |
| Synonyms | m-Dichloroxylene m-Xylylene dichloride α,α'-Dichloro-m-xylene α,α'-dichloro-m-xylene Alpha'-Dichloro-m-xylene m-Bis(chloromethyl)benzene 1,3-Bis(chloroethyl)benzene 1,3-Bis(chloromethyl)benzene 1,3-bis(chloromethyl)-benzen alpha,alpha'-dichloro-m-xylen alpha,alpha-Dichloro-m-xylene alpha,alpha'-dichloro-m-xylen Alpha,Alpha'-Dichloro-m-xylene benzene,1,3-bis(chloromethyl)- Benzene, 1,3-bis(chloromethyl)- m-Xylene, alpha,alpha'-dichloro- m-Xylylene Chloridem-Xylylene Dichloride |
| CAS | 626-16-4 |
| EINECS | 210-932-1 |
| InChI | InChI=1/C8H8Cl2/c9-5-7-2-1-3-8(4-7)6-10/h1-4H,5-6H2 |
Benzene, 1,3-bis(chloromethyl)- - Physico-chemical Properties
| Molecular Formula | C8H8Cl2 |
| Molar Mass | 175.06 |
| Density | 1.202g/mLat 25°C(lit.) |
| Melting Point | 33-35°C(lit.) |
| Boling Point | 250-255°C(lit.) |
| Flash Point | >230°F |
| Water Solubility | hydrolysis |
| Solubility | methanol: soluble1g/10 mL, clear, colorless |
| Vapor Presure | 0.0287mmHg at 25°C |
| Appearance | powder to lump to clear liquid |
| Color | White or Colorless to Almost white or Almost colorless |
| BRN | 2079898 |
| Storage Condition | Inert atmosphere,2-8°C |
| Refractive Index | 1.5544 (estimate) |
| MDL | MFCD00000912 |
| Physical and Chemical Properties | The melting point is 36 degrees C, the boiling point is 254 degrees C, and the density is 1.202. |
| Use | For medicine, whitening agent intermediates |
Benzene, 1,3-bis(chloromethyl)- - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R36 - Irritating to the eyes R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S24/25 - Avoid contact with skin and eyes. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S27 - Take off immediately all contaminated clothing. |
| UN IDs | UN 2811 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | ZE4070000 |
| FLUKA BRAND F CODES | 19 |
| TSCA | Yes |
| HS Code | 29036990 |
| Hazard Class | 6.1 |
| Packing Group | II |
Benzene, 1,3-bis(chloromethyl)- - Introduction
Decompose in water.
Last Update：2022-10-16 17:27:22
Benzene, 1,3-bis(chloromethyl)- - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | M-benzyl chloride is an important chemical raw material with colorless transparent liquid or white crystal appearance, it can be used as an intermediate for organic synthesis to produce P-phthalic methanol and other dyes. used in medicine, whitening agent intermediates. white or yellow flaky crystals, an intermediate in organic synthesis, used in the manufacture of terephthalic methanol and other dyes. used as intermediate in medicine and whitening agent |
| preparation | the synthesis process of M-benzyl chloride is as follows: (1) reaction: add 0.1g m-xylene and G of g1-propyl-3-methylimidazolium chloride to the reaction tank, then under the irradiation of LED light source, inject 106.5G of chlorine gas into the reaction tank, and react for 6h at 60 ℃, (2) separation: add the m-dichlorobenzyl chloride reaction solution into the separation tank, stratified treatment is carried out at 35 ℃, and the upper layer of solution enters the reaction tank to continue the reaction, and the lower layer of solution is crude M-dichlorobenzyl chloride; (3) refining: the crude meta-benzyl chloride was added to a rectification column, and subjected to vacuum distillation at 8mmHg to collect a 145-149 ° C. Fraction to obtain 116.59G of meta-benzyl chloride having a content of 99% and a melting point of 33.5-34.8 ° C. Fig. |
Last Update：2024-04-10 22:29:15
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