alpha,alpha'-Dichloro-p-xylene

Synonym(s):p-Xylylene dichloride;1,4-Bis(chloromethyl)benzene

CAS NO.：623-25-6
Empirical Formula: C8H8Cl2
Molecular Weight: 175.06
MDL number: MFCD00000920
EINECS: 210-782-7
SAFETY DATA SHEET (SDS)
Update Date: 2026-06-04 16:00:12

alpha,alpha'-Dichloro-p-xylene Structural

What is alpha,alpha'-Dichloro-p-xylene?

Chemical properties

white to light yellow crystal powde

The Uses of alpha,alpha'-Dichloro-p-xylene

α,α′-Dichloro-p-xylene is a monomer used in preparation of poly(p-phenylene vinylene(PPV) nanotubes and nanorods by chemical vapor deposition (CVD) polymerization method 1 . α,α′-Dichloro-p-xylene was used in a study to investigate the effect of CVD monomer selection and reaction conditions on the resulting PPV polymer layer composition and luminescence properties 2 .

The Uses of alpha,alpha'-Dichloro-p-xylene

p-Xylylene dichloride is a monomer used in preparation of poly(p-phenylene vinylene(PPV) nanotubes and nanorods by chemical vapor deposition (CVD) polymerization method. It was used in a study to investigate the effect of CVD monomer selection and reaction conditions on the resulting PPV polymer layer composition and luminescence properties.

General Description

α,α′-Dichloro-p-xylene undergoes phase transfer catalysed polycondensation with t-butylcyanoacetate to form carbon-carbon chain polymer.

Flammability and Explosibility

Not classified

Purification Methods

Crystallise the xylene from *benzene and dry it under vacuum. [Beilstein 5 IV 967.]

Properties of alpha,alpha'-Dichloro-p-xylene

Melting point:	98-101 °C(lit.)
Boiling point:	254 °C(lit.)
Density	1,417 g/cm³
vapor pressure	0.541Pa at 25℃
refractive index	1.5544 (estimate)
Flash point:	254°C
storage temp.	Inert atmosphere,Room Temperature
solubility	methanol: 50 mg/mL, clear
form	Crystalline Solid
color	White to light yellow
Water Solubility	hydrolysis
BRN	774706
CAS DataBase Reference	623-25-6(CAS DataBase Reference)
NIST Chemistry Reference	Benzene, 1,4-bis(chloromethyl)-(623-25-6)
EPA Substance Registry System	Benzene, 1,4-bis(chloromethyl)- (623-25-6)

Safety information for alpha,alpha'-Dichloro-p-xylene

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07 Environment GHS09
GHS Hazard Statements	H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P273:Avoid release to the environment. 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.