Product Identification

Product Name

1-Amino-2,5-dimethylbenzene

Synonyms

2,5-Dimethylaniline
2,5-Dimethylbenzenamine

CAS

95-78-3

Formula

C8H11N

Molecular Weight

121.18

EINECS

202-451-0

RTECS

ZE9100000

RTECS Class

Tumorigen; Mutagen

Merck

12,10217

Beilstein/Gmelin

2205178

Beilstein Reference

4-12-00-02567

EC Index Number

612-027-00-0

EC Class

toxic, dangerous for the environment

Physical and Chemical Properties

Appearance

Pale yellow to brown liquid.

Solubility in water

Slightly soluble

Melting Point

15

Boiling Point

218

Vapor Pressure

0.2 (20 C)

Density

0.9790 g/cm3 (20 C)

pKa/pKb

9.47 (pKb)

Partition Coefficient

1.83 at pH 7.4

Heat Of Vaporization

62.8 kJ/mol

Heat Of Combustion

-4681 kJ/mol

Usage

Chemical intermediate for solvent red 26, direct violet 7.

Vapor Density

4.18

Saturation Concentration

2.0 x 10(5) ppm (20%) at 20 C (calculated)

Odor threshold

0.0240 mg/m3e

Refractive Index

1.5591 (21 C)

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.

Skin

Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

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

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

May cause respiratory tract irritation. May cause methemoglobinemia, cyanosis, convulsions, tachycardia, dyspnea, and death. Methemoglobinemia is characterized by dizziness, drowsiness, headache, breath shortness, cyanosis with bluish skin, rapid heart rate and chocolate-brown blood.

Skin

May cause skin irritation. May be absorbed through the skin.

Eyes

May cause eye irritation.

Ingestion

Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause methemoglobinemia, cyanosis, convulsions, and death. Methemoglobinemia is characterized by dizziness, drowsiness, headache, breath shortness, cyanosis with bluish skin, rapid heart rate and chocolate-brown colored blood. May be harmful if swallowed.

Hazards

When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.

EC Risk Phrase

R 23/24/25 33 51/53

EC Safety Phrase

S 28 36/37 45 61

UN (DOT)

1711

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Exposure Effects

Effects may be delayed.

Exposure limit(s)

NIOSH: Potential Occupational Carcinogen.

Poison Class

3 (Strong toxins)

Fire Fighting Measures

Flash Point

97

Autoignition

520

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water fog, dry chemical, carbon dioxide, or regular foam. Do NOT get water inside containers.

Lower exp. limit

1

Fire Potential

This chemical is combustible.

Accidental Release Measures

Small spills/leaks

Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Provide ventilation.

Stability and Reactivity

Disposal Code

9

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents, acids, acid chlorides, halogens, acid anhydrides, hypochlorite, chloroformates.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

1711

Hazard Class

6.1

Packing Group

II

HS Code

2921 49 10