Product Identification

Product Name

3,5-Xylenol

Synonyms

1-Hydroxy-3,5-dimethylbenzene
3,5-Dimethylphenol

CAS

108-68-9

Formula

C8H10O

Molecular Weight

122.17

EINECS

203-606-5

RTECS

ZE6475000

RTECS Class

Tumorigen; Reproductive Effector; Primary Irritant

Merck

12,10215

Beilstein/Gmelin

774117

Beilstein Reference

4-06-00-03141

EC Index Number

604-037-00-9

EC Class

Toxic; Corrosive

Physical and Chemical Properties

Appearance

Colorless to off-white crystalline solid.

Solubility in water

4.8 g/L

Melting Point

61 - 64

Boiling Point

222

Vapor Pressure

0.07 (25 C)

Density

0.9680 g/cm3 (20 C)

pKa/pKb

10.18 (pKa)

Partition Coefficient

2.35

Heat Of Vaporization

47.7 kJ/mol

Usage

Chemical intermediate for p-chloro- and 2,4-dichloro-m-xylenol-biocides.

Odor threshold

4.10 X 10-5 mg/m3

Refractive Index

1.5362 (20 C)

First Aid Measures

Ingestion

Do NOT induce vomiting. 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

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

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

Immediately 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. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

May cause respiratory tract irritation.

Skin

Causes skin irritation. May cause skin burns.

Eyes

Causes eye irritation. May cause eye burns.

Ingestion

May cause irritation of the digestive tract. May be harmful if swallowed. A case of fatal xylenol ingestion by a long stay mental hospital patient is described. Clinical course was similar to that observed in other phenolic poisonings with active bowel sounds, nausea, vomiting, severe metabolic acidosis, hypotension, and cardiac and renal failure.

Hazards

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

EC Risk Phrase

R 24/25 34

EC Safety Phrase

S 26 28 36/37/39 45

UN (DOT)

2261

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

Chronic ingestion may cause effects similar to those of acute ingestion.

Poison Class

4

Fire Fighting Measures

Flash Point

82

Autoignition

> 500

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 spray, dry chemical, carbon dioxide, or chemical foam.

Upper exp. limit

6.4

Lower exp. limit

1.1

Fire Potential

This material is probably combustible.

Accidental Release Measures

Small spills/leaks

Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions.

Stability and Reactivity

Disposal Code

9

Incompatibilities

Bases - acid chlorides - acid anhydrides - oxidizing agents - corrodes steel - brass - copper - copper alloys.

Stability

Stable under normal temperatures and pressures.

Decomposition

Carbon monoxide, carbon dioxide.

Combustion Products

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

Transport Information

UN Number

2261

Hazard Class

6.1

Packing Group

II

HS Code

2907 14 00