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2,5-Dibromotoluene

2,5-Dibromotoluene structure

CAS No:
615-59-8
Formula:
C7H6Br2
Chemical Name:
2,5-Dibromotoluene
Synonyms:
Benzene,1,4-dibromo-2-methyl-;Toluene,2,5-dibromo-;1,4-Dibromo-2-methylbenzene;2,5-Dibromotoluene;NSC 6222;3,6-Dibromotoluene;1,4-Dibromotoluene
Categories:
Organic Chemistry > Hydrocarbons and Derivatives

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Description

clear colourless to yellowish liquid

2,5-Dibromotoluene Basic Attributes

Molecular Weight：

249.93

Exact Mass：

249.93

BRN：

1859123

EC Number：

210-437-0

UNII：

BAX67T68IK

NSC Number：

6222

DSSTox ID：

DTXSID1050389

HScode：

2903999090

Characteristics

PSA：

XLogP3：

4.3

Appearance：

Clear colorless to yellow Liquid

Density：

1.8154 g/cm³ @ Temp: 25 °C

Melting Point：

5.6 °C

Boiling Point：

236 °C

Flash Point：

110°C

Refractive Index：

1.588

Storage Conditions：

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Safety Information

Transport codes：

NONH for all modes of transport

wgk germany：

hazard class code：

36/37/38

safety instructions：

24/25-37/39-26

Marks：

Stability/Shelf Life：

Stable at room temperature in closed containers under normal storage and handling conditions.

Precautionary statement(s)：

P261-P305 + P351 + P338

Hazard Statements：

H315-H319-H335

GHS Classification：

|Warning|H315 (91.84%): 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 49 companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

2,5-Dibromotoluene Use and Manufacturing

Methods of Manufacturing

In a 2000 ml beaker to 400 ml of 23percent aqueous HBr, 46.5 g (0.25 mol) of melted 2-methyl-4-bromoaniline was slowly added. This mixture was stirred for 20 minutes using a mechanical stirrer, cooled to -53, 6-Dibromotoluene 3, 6-Dibromotoluene (10 g, 40 mmol)Was dissolved in anhydrous tetrahydrofuran (40 mL). N-Butyllithium (10 g, 160 mmol) was slowly dropped at -78 ° C., and the mixture was stirred for 2 hours and 30 minutes.Dimethylformamide (15.5 mL, 200 mmol) was added thereto, followed by stirring for 1 hour. Then, 3N hydrochloric acid was added, and anhydrous tetrahydrofuran was removed, followed by extraction with chloroform, drying over anhydrous magnesium sulfate, and purification through silica gel (SiO2, n-hexane: ethyl acetate = 5: 1).

Manufacturing Info：

Benzene, 1,4-dibromo-2-methyl-: INACTIVE

Computed Properties

Molecular Weight:249.93
XLogP3:4.3
Exact Mass:249.88158
Monoisotopic Mass:247.88363
Heavy Atom Count:9
Complexity:92.9
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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2,5-Dibromotoluene

CAS No.: 615-59-8

Content: 99.00%

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