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2,5-Dichloro-p-xylene

2,5-Dichloro-p-xylene structure

CAS No:
1124-05-6
Formula:
C8H8Cl2
Chemical Name:
2,5-Dichloro-p-xylene
Synonyms:
Benzene,1,4-dichloro-2,5-dimethyl-;p-Xylene,2,5-dichloro-;1,4-Dichloro-2,5-dimethylbenzene;2,5-Dichloro-p-xylene;2,5-Dichloro-1,4-dimethylbenzene;NSC 61999
Categories:
Organic Chemistry > Hydrocarbons and Derivatives

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2,5-Dichloro-p-xylene Basic Attributes

Molecular Weight：

175.06

Exact Mass：

175.06

EC Number：

214-387-0

UNII：

7P8M86ZOB2

NSC Number：

61999

DSSTox ID：

DTXSID5044780

HScode：

2903999090

Characteristics

PSA：

XLogP3：

3.9

Density：

1.2520 (estimate)

Melting Point：

71 °C

Boiling Point：

222 °C

Flash Point：

221-223°C

Refractive Index：

1.5544 (estimate)

Vapor Pressure：

0.153mmHg at 25°C

Safety Information

Transport codes：

NONH for all modes of transport

wgk germany：

hazard class code：

36/37/38

safety instructions：

26-37

Precautionary statement(s)：

P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501

Hazard Statements：

H315

GHS Classification：

|Warning|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 6 companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

2,5-Dichloro-p-xylene Use and Manufacturing

Methods of Manufacturing

In a 500 ml round bottom flask, 330 g of p-xylene (3.1 mol), 0.50 g (0.003 mol) of ferric chloride and 0.58 g (0.003 mol) of diphenyl sulfide were added with stirring. Then, the temperature of the mixture being stirred was raised to 30 °C., at the same temperature, 521 g of gaseous chlorine was blown over 8 hours. The temperature was gradually increased to about 60 ° C. based on the solidification temperature of the reaction mixture.After the chlorination reaction, the crude product was analyzed by gas chromatography, and as a result, It was found to have the following composition. (Composition ratio of the crude product) Chlorination degree (number of moles of chlorine substituted to 1 mole of p-xylene) 2.21 25 DCPX 74.5percent 23 DCPX 5.1percent Trichloro-p-xylene 19.9percent Tetrachloro-p-xylene 0.5percent This crude product was purged with nitrogen and distilled in the same manner as in Example 1, 255.6 g of crude 25 DCPX having a purity of 93.9percent was obtained. To this was added 281.8 g of isopropyl alcohol and heated to 60°C. to dissolve the crystals, By cooling to 19 ° C. to crystallize, 187 g (yield 53.4percent) of 25 DCPX having a purity of 99.9percent was obtained.

Manufacturing Info：

Benzene, 1,4-dichloro-2,5-dimethyl-: ACTIVE

Computed Properties

Molecular Weight:175.05
XLogP3:3.9
Exact Mass:174.0003056
Monoisotopic Mass:174.0003056
Heavy Atom Count:10
Complexity:99.8
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

p-Xylene

Recommended Suppliers of 2,5-Dichloro-p-xylene

HANGZHOU LEAP CHEM CO., LTD. Contact Supplier

CN
5 YRS

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1,4-Dichloro-2,5-dimethylbenzene

CAS No.: 1124-05-6

Content: 99.00%

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