Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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2-Methyl-1,4-benzenediamine(95-70-5)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
2-Methyl-1,4-benzenediamine
Synonyms
2,5-Diaminotoluene
2-Methylbenzene-1,4-diamine
2-Methyl-para-phenylenediamine
4-Amino-2-methylaniline
para-Toluenediamine
Toluene-2,5-diamine
CAS
95-70-5
Formula
C7H10N2
Molecular Weight
122.19
EINECS
202-442-1
RTECS
XS9700000
RTECS Class
Tumorigen; Mutagen; Primary Irritant
Beilstein/Gmelin
774521
Beilstein Reference
4-13-00-00246
EC Index Number
612-125-00-3
EC Class
Toxic; Harmful; Sensitising; Dangerous for the Environment

Physical and Chemical Properties

Appearance
Plates from benzene.
Solubility in water
Soluble
Melting Point
150 - 155
Boiling Point
273
Vapor Pressure
0.006 (25 C)
pKa/pKb
7.83 (pKb)
Partition Coefficient
.25
Heat Of Vaporization
51.2 kJ/mol
Usage
Intermediate in prodn of two dyes, ci basic red 2 & ci acid brown 103, in hair dyes.

First Aid Measures

Ingestion
Do not induce emesis. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Handling and Storage

Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Inhalation
Bronchospasm may develop in sensitized individuals.
Skin
Contact dermatitis is common.
Eyes
Significant laryngeal and facial edema may occur. Breathing may be impaired as a result of laryngeal edema. Immediate (usually) or delayed hypersensitivity reactions have been described following application of PPD-containing hair dyes to eyebrows or eyelashes. Eye pain and burning, and edema occur, which may progress to widespread facial edema, dermatitis, tearing, photophobia, uveitis, and keratitis. Corneal necrosis and vision loss may occur. Bilateral optic neuritis has been reported with blindness.
Ingestion
Epigastric pain and recurrent vomiting are common shortly following ingestion.
Hazards
Contact with metals may evolve flammable hydrogen gas.
UN (DOT)
3259

Exposure Controls/Personal Protection

Personal Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Exposure Effects
Abnormally low blood pressure and labored respirations may occur. CNS depression and peripheral neuropathy have been reported after ingestion.

Fire Fighting Measures

Flash Point
140
Fire Fighting
DOT recommendations-for small fires, use dry chemicals, carbon dioxide, water spray, or foam. For large fires, use water spray, fog, or foam. If you can do it without risk, move containers from fire area.
Fire Potential
Burns but does not ignite readily.

Accidental Release Measures

Small spills/leaks
ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.

Stability and Reactivity

Stability
No data.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
3259
Hazard Class
8
Packing Group
I; II; III
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