Product Identification

Product Name

2-Hydroxytoluene

Synonyms

2-Hydroxy-1-methylbenzene
2-Methylphenol
o-Hydroxytoluene

CAS

95-48-7

Formula

C7H8O

Molecular Weight

108.14

EINECS

202-423-8

RTECS

GO6300000

RTECS Class

Tumorigen; Mutagen; Primary Irritant

Merck

13,2604

Beilstein/Gmelin

506917

Beilstein Reference

4-06-00-01940

EC Index Number

604-004-00-9

EC Class

Toxic; Corrosive

Physical and Chemical Properties

Appearance

White crystalline solid or yellowish liquid with a phenolic or sweet tarry odor. Turns black with age and exposure to air and light.

Solubility in water

25 g/L

Melting Point

30 - 34

Boiling Point

191

Vapor Pressure

.3

Density

1.047 g/cm3 (20 C)

pKa/pKb

10.287 (pKa)

Partition Coefficient

1.95

Heat Of Vaporization

45.2 kj/mol

Heat Of Combustion

-3693 kJ/mol

Usage

For making synthetic resins, in disinfectants and fumigants, as industrial solvent.

Saturation Concentration

300 ppm (0.03%) at 20 C; 400 ppm (0.04%) at 25 C (calculated)

Vapor Density

3.72

Odor threshold

5 ppm 1.4 mg/L

Refractive Index

1.5386 (35 C)

First Aid Measures

Ingestion

Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen.

Skin

Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Discard contaminated clothing in a manner which limits further exposure. Destroy contaminated shoes.

Eyes

Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Handling and Storage

Storage

Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Ground and bond containers when transferring material. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Do not ingest or inhale. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.

Hazards Identification

Inhalation

May be fatal if inhaled. Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma. May cause headache. May cause nausea and possible vomiting.

Skin

May be absorbed through the skin in harmful amounts. Causes severe skin irritation and burns.

Eyes

May result in corneal injury. Causes eye irritation and burns. May cause conjunctivitis and keratitis.

Ingestion

Causes gastrointestinal irritation with nausea, vomiting and diarrhea. Causes gastrointestinal tract burns. May cause liver and kidney damage. Cresols may cause abnormalities of the central nervous system, respiratory system, spleen and pancreas.

Hazards

Runoff from fire control water may give off poisonous gases. This material Container may explode in heat of fire. Slight explosion and fire hazard in the form of vapor when exposed to heat or flame. When heated to decomposition, it emits highly toxic fumes. Reacts violently with nitric acid, oleum, and chlorosulfonic acid.

EC Risk Phrase

R 24/25 34

EC Safety Phrase

S 36/37/39 45

UN (DOT)

2076

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

May cause liver and kidney damage. May cause appetite loss, diarrhea, skin abnormalities, and digestive tract disturbances.

Exposure limit(s)

OSHA PEL: TWA 5 ppm (22 mg/m3) skin NIOSH REL: TWA 2.3 ppm (10 mg/m3) NIOSH IDLH: 250 ppm

Poison Class

3

Fire Fighting Measures

Flash Point

81

Autoignition

555

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray.

Upper exp. limit

7.6

Lower exp. limit

1.4

Fire Potential

Fire may produce irritating or poisonous gases.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.

Stability and Reactivity

Disposal Code

9

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents, strong acids, bases, alliphatic amines, chlorosulfonic acid, oleum.

Decomposition

Carbon monoxide, carbon dioxide.

Combustion Products

Flammable toxic vapors given off in fire.

Transport Information

UN Number

2076

Hazard Class

6.1

Packing Group

II

HS Code

2907 12 00