Product Identification

Product Name

2-Thio-2,4-thiazolidinedione

Synonyms

2-Sulfanylidene-1,3-thiazolidin-4-one
Rhodanic acid
Rhodanine
Rhodaninic acid
Uranium triiodide

CAS

13775-18-3

CAS

141-84-4

Formula

C3H3NOS2

Formula

I3U

Molecular Weight

618.74

Molecular Weight

133.19

EINECS

205-505-1

EINECS

237-406-4

RTECS

VI7700000

RTECS Class

Agricultural Chemical and Pesticide; Drug; Primary Irritant

Merck

12,8351

Beilstein/Gmelin

110701

Beilstein/Gmelin

141844 (G)

Beilstein Reference

4-27-00-03188

EC Class

harmful

Physical and Chemical Properties

Appearance

black hygroscopic crystals

Appearance

Light yellow crystals.

Solubility in water

Slightly soluble

Melting Point

766

Melting Point

166 - 168

Boiling Point

344

Density

1.549 g/cm3

pKa/pKb

pK (25°) 5.52 (pKa)

Partition Coefficient

.26

Usage

Fungicide.

First Aid Measures

Ingestion

Medical problems take priority over radiological concerns. Use first aid treatment according to the nature of the injury. Do not delay care and transport of a seriously injured person.

Ingestion

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

Inhalation

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

Inhalation

Minimal risk if packaging remains intact. Package damage can result in a measurable release of radiation but the risk is still low.

Inhalation

Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult. See Ingestion.

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.

Skin

Immediately flush with running water for at least 20 minutes. See Ingestion.

Skin

See Inhalation.

Eyes

See Inhalation.

Eyes

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

Eyes

Immediately flush with running water for at least 20 minutes. See Ingestion.

Handling and Storage

Storage

Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Storage

Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Handling

All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Ingestion

See Inhalation.

Inhalation

May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.

Skin

May cause skin irritation.

Eyes

Causes eye irritation.

Ingestion

Harmful if swallowed. May cause irritation of the digestive tract.

EC Risk Phrase

R 22 36

EC Safety Phrase

S 22 26 36/37/39

UN (DOT)

2909

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.

Personal Protection

Wear appropriate protective gloves, clothing and goggles.

Respirators

Wear positive pressure self-contained breathing apparatus (SCBA).

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

The toxicological properties of this material have not been investigated.

Fire Fighting Measures

Fire Fighting

Presence of radioactive material will not influence the fire control processes and should not influence selection of techniques. Small Fires: Dry chemical, carbon dioxide, water spray or regular foam. Large Fires: Water spray, fog (flooding amounts).

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. May explode from heat or contamination. Containers may explode when heated. Extinguishing media: Use agent most appropriate to extinguish fire. Cool containers with flooding quantities of water until well after fire is out. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Fire Potential

May burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation.

Small spills/leaks

Do not touch damaged packages or spilled material. Cover liquid spill with sand, earth or other noncombustible absorbent material. Cover powder spill with plastic sheet or tarp to minimize spreading. Contact radiation safety officer.

Stability and Reactivity

Disposal Code

3

Stability

No data.

Incompatibilities

Oxidizing agents.

Stability

Stable under normal temperatures and pressures.

Decomposition

Nitrogen oxides, carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Transport Information

UN Number

2909

Hazard Class

7

HS Code

2934 10 00