Product Identification

Product Name

Thiocyanic acid ethyl ester

Synonyms

Ethyl rhodanate
Ethyl sulfocyanate
Thiocyanatoethane
Thiocyanic acid, ethyl ester

CAS

542-90-5

Formula

C3H5NS

Molecular Weight

87.14

EINECS

208-833-3

RTECS

XK9900000

RTECS Class

Other

Beilstein/Gmelin

1737620

Beilstein Reference

4-03-00-00328

EC Class

flammable, harmful

Physical and Chemical Properties

Appearance

Volatile liquid.

Solubility in water

Soluble

Melting Point

-86

Boiling Point

143 - 145

Vapor Pressure

5 (25 C)

Density

1.033 g/cm3 (0 C)

Partition Coefficient

.97

Heat Of Vaporization

38.2 kJ/mol

Heat Of Combustion

-2570 kJ/mol

Usage

Agricultural insecticide.

Vapor Density

3.01

Refractive Index

1.46 (20 C)

First Aid Measures

Ingestion

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.

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

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. Do NOT allow victim to rub or keep eyes closed.

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. Flammables-area. Store protected from moisture.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not allow contact with water. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Keep from contact with moist air and steam.

Hazards Identification

Inhalation

The toxicological properties of this substance have not been fully investigated. Aspiration may lead to pulmonary edema. Vapors may cause dizziness or suffocation. May cause burning sensation in the chest.

Skin

May cause irritation and dermatitis. May cause cyanosis of the extremities.

Eyes

May cause eye irritation. Lachrymator. May cause chemical conjunctivitis and corneal damage.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated. Ingestion of large amounts may cause CNS depression.

Hazards

When heated to decomposition, it emits very toxic fumes of oxides of nitrogen and sulfur.

EC Risk Phrase

R 10 20/21/22

EC Safety Phrase

S 36/37

UN (DOT)

1992

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

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Exposure Effects

Experimental animals administered lethane 384 initially have an increased respiratory rate followed rapidly by respiratory depression. One patient with lethane poisoning developed an elevated temperature associated with aspiration pneumonitis. Abnormally low blood pressure and shock were noted in a case of thanite poisoning.

Fire Fighting Measures

Flash Point

35

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. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT get water inside containers. Do NOT use straight streams of water.

Fire Potential

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. Do not get water inside containers. A vapor suppressing foam may be used to reduce vapors.

Stability and Reactivity

Disposal Code

1

Incompatibilities

Moisture, strong acids, strong bases, strong oxidizing agents.

Stability

Stable under normal temperatures and pressures.

Decomposition

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

Combustion Products

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

Transport Information

UN Number

1992

Hazard Class

3

Packing Group

I; II; III

HS Code

2930 90 70