Antu
1-(1-Naphthyl)-2-thiourea
1-Naphtylthiourea
C11H10N2S / C10H7NHCSNH2
Molecular mass: 202.3
ICSC # 0973
CAS # 86-88-4
RTECS # YT9275000
UN # 1651
EC # 006-008-00-0
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Combustible under specific conditions.
Gives off irritating or toxic fumes (or gases) in a fire.
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Powder, water spray, foam, carbon dioxide.
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Explosion
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Exposure
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PREVENT DISPERSION OF DUST!
STRICT HYGIENE!
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IN ALL CASES CONSULT A DOCTOR!
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•Inhalation
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Cough.
Laboured breathing.
Shortness of breath.
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Local exhaust or breathing protection.
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Fresh air, rest.
Half-upright position.
Artificial respiration if indicated.
Refer for medical attention.
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•Skin
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MAY BE ABSORBED!
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
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•Eyes
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Safety goggles,
face shield,
or eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Abdominal pain.
Vomiting.
Laboured breathing.
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Give a slurry of activated charcoal in water to drink.
Induce vomiting (ONLY IN CONSCIOUS PERSONS!).
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
(Extra personal protection: P3 filter respirator for toxic particles).
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Separated from
strong oxidants,
silver nitrate,
food and feedstuffs
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Do not transport with food and feedstuffs.
T+ symbol
R: 28-40
S: 1/2-25-36/37-45
UN Hazard Class: 6.1
UN Packing Group: II
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Important Data
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Physical State; Appearance:
WHITE
,
ODOURLESS CRYSTALLINE POWDER
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
producing
toxic gases
and
toxic fumes
including
nitrogen oxides
,
sulfur oxides
and
carbon monoxide
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Reacts with strong oxidants such as silver nitrate
causing fire and explosion hazard.
Occupational Exposure Limits:
TLV (as TWA): 0.3 mg/m3 A4 (ACGIH 1999).
MAK: 0.3 mg/m3 as I (1999)
MAK: class II.2 (1999)
OSHA PEL: TWA 0.3 mg/m3
NIOSH REL: TWA 0.3 mg/m3
NIOSH IDLH: 100 mg/m3 See: 86884
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol,
through the skin and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly.
Effects of Short-Term Exposure:
Exposure to substance could cause lung oedema.
Medical observation is indicated.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Decomposes below boiling point: see notes
Melting point: 198°C
Density: >1
g/cm3
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Solubility in water:
none
Octanol/water partition coefficient as log Pow: 1.66 (calculated)
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Environmental
Data
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N O T E S
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Commonly present impurities can change the toxicological properties of this substance; consult an expert. Technical product is a blue-grey powder.
Temperature of decomposition unknown in literature.
Do NOT take working clothes home.
Anturate, Bantu, Kill Kantz, Krysid, Rattrack and Rat-tu are trade names.
Transport Emergency Card: TEC (R)-61G12b
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ADDITIONAL INFORMATION
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ICSC: 0973
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alpha-NAPHTHYLTHIOUREA
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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