Product Identification

Product Name

1,4-Naphthalenedione

Synonyms

1,4-Naphthalenedione
1,4-Naphthylquinone
p-Naphthoquinone

CAS

130-15-4

Formula

C10H6O2

Molecular Weight

158.16

EINECS

204-977-6

RTECS

QL7175000

RTECS Class

Agricultural Chemical and Pesticide; Tumorigen; Drug; Mutagen; Reproductive Effector

Merck

12,6482

Beilstein/Gmelin

878524

Beilstein Reference

4-07-00-02422

EC Class

very toxic, irritant, sensitizing, dangerous for the environment

Physical and Chemical Properties

Appearance

Yellow needles or brownish green powder with an odor of benzoquinone.

Solubility in water

Slightly soluble

Melting Point

124

Boiling Point

298

Vapor Pressure

0.0013 (25 C)

Density

1.422 g/cm3

Partition Coefficient

1.71

Heat Of Vaporization

53.8 kJ/mol

Heat Of Combustion

-4604 kJ/mol

Usage

Polymerization regulator for rubber and polyester resins, synthesis of dyes and pharmaceuticals, algicide, fungicide.

Vapor Density

5.46

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. DO NOT use mouth-to-mouth respiration.

Skin

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

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

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. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

Effects may be delayed. May cause respiratory tract irritation.

Skin

Causes skin irritation. May cause skin burns. Effects may be delayed. May cause discoloration, erythema, swelling, and the formation of papules and vesicles.

Eyes

Causes eye irritation. May cause eye burns. Quinones were suspected and shown to cause discoloration of the cornea. May cause visual disturbances.

Ingestion

Harmful if swallowed. May cause irritation of the digestive tract. Ingestion may cause the following: a decreased number of erythrocytes in the blood, decreased hemoglobin levels in the blood and depressed phagocytic activity of leukocytes.

Hazards

Contact with metals may evolve flammable hydrogen gas.

EC Risk Phrase

R 25

EC Safety Phrase

S 22 36/37 45

UN (DOT)

2811

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

Prolonged or repeated skin contact may cause dermatitis. Prolonged contact may cause severe eye irritation or burns.

Fire Fighting Measures

Flash Point

111

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Containers may explode when heated. Non-combustible, substance itself does not burn but may decompose upon heating to produce irritating, corrosive and/or toxic fumes. Extinguishing media: Do NOT get water inside containers. 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. Cool containers with flooding quantities of water until well after fire is out.

Fire Potential

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

9

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents - strong reducing agents.

Decomposition

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Combustion Products

When heated, it emits toxic fumes.

Transport Information

UN Number

2811

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2914 69 10