Product Identification

Product Name

Malonylurea

Synonyms

2,4,6(1H,3H,5H)-Pyrimidinetrione
2,4,6-Pyrimidinetriol
2,4,6-Trihydroxypyrimidine
6-Hydroxyuracil
Malonylurea

CAS

67-52-7

Formula

C4H4N2O3

Molecular Weight

128.09

EINECS

200-658-0

RTECS

CP8000000

RTECS Class

Drug

Merck

13,966

Beilstein/Gmelin

120502

Beilstein Reference

5-24-09-00078

Physical and Chemical Properties

Appearance

odorless white to off-white solid

Solubility in water

Very soluble

Melting Point

250 - 252

Boiling Point

441

pKa/pKb

4.00 (pKa)

Partition Coefficient

-1.36

Usage

Production of plastics, pharmaceuticals.

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.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.

Eyes

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

Handling and Storage

Storage

Store in a cool, dry place. Keep from contact with oxidizing materials.

Handling

Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

Ingestion of large amounts may cause gastrointestinal irritation. Expected to be a low ingestion hazard.

Inhalation

May cause respiratory tract irritation. Low hazard for usual industrial handling.

Skin

Dust may cause mechanical irritation. Low hazard for usual industrial handling.

Eyes

Dust may cause mechanical irritation.

EC Risk Phrase

R 36/37/38

EC Safety Phrase

S 26 36

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 minimize contact with skin.

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.

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Accidental Release Measures

Small spills/leaks

Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions.

Stability and Reactivity

Disposal Code

4

Stability

Stable under normal shipping and handling conditions. However, may decompose if heated.

Incompatibilities

Strong oxidizing agents.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide.

Transport Information

HS Code

2933 52 00