ChemicalBook >>thiosemicarbazide>>3-Thiosemicarbazide(79-19-6)

3-Thiosemicarbazide(79-19-6)

3-Thiosemicarbazide(79-19-6)
Product IdentificationBack to Contents
【Product Name】

3-Thiosemicarbazide
【Synonyms】

Hydrazinecarbothioamide
N-Aminothiourea
N-Ethylpiperazine
【CAS】

5308-25-8
【CAS】

79-19-6
【Formula】

C6H14N2
【Formula】

CH5N3S
【Molecular Weight】

91.14
【Molecular Weight】

114.19
【EINECS】

201-184-7
【EINECS】

226-166-6
【RTECS】

TM0815500
【RTECS】

VT4200000
【RTECS Class】

Agricultural Chemical and Pesticide; Tumorigen; Mutagen
【RTECS Class】

Other
【Merck】

12,9499
【Beilstein/Gmelin】

506320
【Beilstein/Gmelin】

102971
【Beilstein Reference】

5-23-01-00132
【Beilstein Reference】

4-03-00-00374
【EC Class】

flammable
【EC Class】

very toxic
Physical and Chemical PropertiesBack to Contents
【Appearance】

A white crystalline powder and is odorless.
【Appearance】

Clear, colorless liquid.
【Solubility in water】

Soluble
【Melting Point】

178 - 180
【Melting Point】

-60
【Boiling Point】

157
【Vapor Pressure】

105.008 (92.25 C)
【Density】

0.8989 g/cm3 (20 C)
【Partition Coefficient】

-.73
【Usage】

Reagent for ketones and certain metals, photography, rodenticide.
【Vapor Density】

3.94
【Refractive Index】

1.463 (20 C)
First Aid MeasuresBack to Contents
【Ingestion】

Causes gastrointestinal tract burns. May cause perforation of the digestive tract. Ingestion of large amounts may cause CNS depression. May cause systemic effects.
【Ingestion】

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. SPEED IS ESSENTIAL. A DOCTOR MUST BE NOTIFIED AT ONCE.
【Ingestion】

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

Get medical aid immediately. Remove from exposure to fresh air immediately. Do not use mouth-to-mouth respiration if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.
【Inhalation】

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

Causes chemical burns to the respiratory tract. Aspiration may lead to pulmonary edema. Vapors may cause dizziness or suffocation. May cause systemic effects. May cause burning sensation in the chest.
【Skin】

Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
【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】

Causes skin burns. May cause skin rash (in milder cases), and cold and clammy skin with cyanosis or pale color.
【Eyes】

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

Causes eye burns. May cause chemical conjunctivitis and corneal damage.
【Eyes】

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).
Handling and StorageBack to Contents
【Storage】

Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Flammables-area. Store in a cool, dry area away from incompatible substances.
【Storage】

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Poison room locked. Keep containers tightly closed.
【Handling】

Use only in a well ventilated area. Use spark-proof tools and explosion proof equipment. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not get on skin or in eyes. Do not ingest or inhale. Discard contaminated shoes.
【Handling】

Wash thoroughly after handling. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Do not breathe dust, vapor, mist, or gas. Keep container tightly closed. Avoid ingestion and inhalation. Use only in a chemical fume hood.
Hazards IdentificationBack to Contents
【Inhalation】

Causes respiratory tract irritation.
【Skin】

Causes skin irritation.
【Eyes】

May cause eye irritation.
【Ingestion】

May be fatal if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
【Hazards】

Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
【Hazards】

When heated to decomposition, very toxic fumes of sulfur oxides and nitrogen oxides are emitted.
【EC Risk Phrase】

R 10 34
【EC Risk Phrase】

R 28 52/53 63
【EC Safety Phrase】

S 22 28 36/37/39 45 61
【EC Safety Phrase】

S 26 36/37/39 45
【UN (DOT)】

2734
【UN (DOT)】

2811
Exposure Controls/Personal ProtectionBack to Contents
【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.
【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.
【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】

CNS excitation and seizures may occur. Thiosemicarbazide was teratogenic in test animals.
【Exposure Effects】

Effects may be delayed.
【Poison Class】

2
Fire Fighting MeasuresBack to Contents
【Flash Point】

49
【Autoignition】

> 350
【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. Runoff from fire control or dilution water may cause pollution. 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. In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective.
【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.
【Fire Potential】

Flammable/combustible material. May be ignited by heat, sparks or flames.
【Fire Potential】

Nonflammable.
Accidental Release MeasuresBack to Contents
【Small spills/leaks】

Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.
【Small spills/leaks】

Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Stability and ReactivityBack to Contents
【Disposal Code】

9
【Stability】

No data.
【Stability】

Stable under normal temperatures and pressures.
【Incompatibilities】

Strong oxidizing agents - strong acids - strong bases.
【Incompatibilities】

Strong oxidizing agents.
【Decomposition】

Nitrogen oxides, carbon monoxide, carbon dioxide.
【Decomposition】

Nitrogen oxides, carbon monoxide, oxides of sulfur, carbon dioxide.
【Combustion Products】

Fire may produce irritating, corrosive and/or toxic gases.
【Combustion Products】

Fire will produce irritating, corrosive and/or toxic gases.
Transport InformationBack to Contents
【UN Number】

2734
【UN Number】

2811
【Hazard Class】

6.1
【Hazard Class】

8
【Packing Group】

I; II
【Packing Group】

I; II; III
【HS Code】

2930 90 70
【HS Code】

2933 59 95
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