13640-78-3

C 10 H 8 S 2
CAS Number
13640-78-3
(International)

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Section II.Composition and Information on Ingredients
Chemical NameCAS Number Percent (%)TLV/PELToxicology Data
trans-1,2-Di(2-thienyl)ethyleneMin. 98.0 (GC)Not available.Not available.
13640-78-3

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Section III.Hazards Identification
Acute Health Effects
N o specific inform ation is available in our data base regarding the toxic effects of this m aterial for hum ans. H ow ever,
exposure to any chem ical should be kept to a m inim u m . Skin and eye contact m ay result in irritation. M ay be harm ful if
inhaled or ingested. A lw ays follow safe industrial hygiene practices and w ear proper protective equipm ent w hen
handling this com pound. Follow safe industrial hygiene practices and alw ays w ear proper protective equipm ent w hen
handling this compound.
Chronic Health EffectsCARCINOGENIC EFFECTS : Not available.
MUTAGENIC EFFECTS : Not available.
TERATOGENIC EFFECTS : Not available.
DEVELOPMENTAL TOXICITY : Not available.
Repeated or prolonged exposure to this compound is not known to aggravate existing medical conditions.

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Section IV.First Aid Measures
Eye Contact
C heck for and rem ove any contact lenses. In case of contact, im m ediately flush eyes w ith plenty of w ater for at least 15
minutes. Get medical attention.
Skin Contact
In case of contact, im m ediately flush skin w ith plenty of w ater. Rem ove contam inated clothing and shoes. W ash
clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention.
Inhalation
If the victim is not breathing, perform m outh-to-m outh resuscitation. Loosen tight clothing such as a collar, tie, belt or
w aistband. If breathing is difficult, oxygen can be adm inistered. Seek m edical attention if respiration problem s do not
improve.
Ingestion
IN D U C E V O M ITIN G by sticking finger in throat. Low er the head so that the vom it w ill not reenter the m outh and throat.
Loosen tight clothing such as a collar, tie, belt or w aistband. If the victim is not breathing, perform m outh-to-m outh
resuscitation. Exam ine the lips and m outh to ascertain w hether the tissues are dam aged, a possible in dication that the
toxic m aterial w as ingested; the absence of such signs, how ever, is not conclusive. SEEK IM M ED IA TE M ED IC A L
ATTENTION in case of ingestion of a radioactive material.

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Section V.Fire and Explosion Data
FlammabilityAuto-IgnitionNot available.
May be combustible at high temperature.
Flammable Limits
Flash Points
Not available.
Not available.
Combustion Products
These products are toxic carbon oxides (CO, CO2), sulfur oxides (SO2, SO 3...).
Fire Hazards
Not available.
Explosion Hazards
Risks of explosion of the product in presence of mechanical impact: Not available.
Risks of explosion of the product in presence of static discharge: Not available.
Fire Fighting Media
SMALL FIRE: Use DRY chemical powder.
and Instructions
LARGE FIRE: Use water spray, fog or foam. DO NOT use water jet.
Consult with local fire authorities before attempting large scale fire-fighting operations.
Continued on Next Page
Chemitrans-1,2-Di(2-thienyl)ethylene

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Section VI.Accidental Release Measures
Spill Cleanup
U se a shovel to put the m aterial into a convenient w aste disposal container. Finish cleaning the spill by rinsing any
Instructionscontam inated surfaces w ith copious am ounts of w ater. C onsult federal, state, and/or local authorities for assistance on
disposal.

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Section VII.Handling and Storage
Handling and Storage
K eep aw ay from heat. M echanical exhaust required. W hen not in use, tightly seal the container and store in a dry, cool
place. Avoid excessive heat and light. Do not breathe dust.
Information
Always store away from incompatible compounds such as oxidizing agents.

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Section VIII.Exposure Controls/Personal Protection
Engineering Controls
U se process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below
recom m ended exposure lim its. If user operations generate dust, fum e or m ist, use ventilation to keep exposure to
airborne contaminants below the exposure limit.
Personal Protection
Splash goggles. Lab coat. D ust respirator. Boots. G loves. Suggested protective clothing m ight not be sufficient;
consult a specialist BEFORE handling this product. Be sure to use a MSHA/NIOSH approved respirator or equivalent.
Exposure Limits
Not available.

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Section IX.Physical and Chemical Properties
Physical state @ 20°CSolubility
Solid. (Powder.)
Not available.
Specific GravityNot available.
Molecular WeightPartition Coefficient
192.3Not available.
Boiling PointVapor Pressure
Not available.Not applicable.
Melting PointVapor Density
133°C (271.4°F)Not available.
Refractive IndexVolatility
Not available.Not available.
Critical TemperatureOdor
Not available.Not available.
ViscosityTaste
Not available.Not available.

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Section X.Stability and Reactivity Data
Stability

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This material is stable if stored under proper conditions. (See Section VII for instructions)
Conditions of Instability
Avoid excessive heat and light.
Incompatibilities
Reactive with oxidizing agents.

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Section XI.Toxicological Information
RTECS Number
Not available.
Routes of Exposure
Eye Contact. Ingestion. inhalation.
Toxicity Data
Not available.
Chronic Toxic EffectsCARCINOGENIC EFFECTS : Not available.
MUTAGENIC EFFECTS : Not available.
TERATOGENIC EFFECTS : Not available.
DEVELOPMENTAL TOXICITY : Not available.
Repeated or prolonged exposure to this compound is not known to aggravate existing medical conditions.
Acute Toxic Effects
N o specific inform ation is available in our data base regarding the toxic effects of this m aterial for hum ans. H ow ever,
exposure to any chem ical should be kept to a m inim u m . Skin and eye contact m ay result in irritation. M ay be harm ful if
inhaled or ingested. A lw ays follow safe industrial hygiene practices and w ear proper protective equipm ent w hen
handling this com pound. Follow safe industrial hygiene practices and alw ays w ear proper protective equipm ent w hen
handling this compound.
Continued on Next Page
trans-1,2-Di(2-thienyl)ethylene

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Section XII.Ecological Information
Ecotoxicity
Not available.
Environmental Fate
Not available.

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Section XIII.Disposal Considerations
Waste DisposalRecycle to process, if possible. C onsult your local regional authorities. You m ay be able to dissove or m ix m aterial w ith a
com bustible solvent and burn in a chem ical incinerator equipped w ith an afterburner and scrubber system . O bserve all
federal, state and locl regulations when disposing of the substance.

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Section XIV.Transport Information
DOT Classification
Not a DOT controlled material (United States).
PIN Number
Not applicable.
Proper Shipping Name
Not applicable.
Packing Group (PG)
Not applicable.
DOT Pictograms

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Section XV.Other Regulatory Information and Pictograms
TSCA Chemical Inventory
T h is p r o d u c t is NOT o n t h e E P A T o x ic S u b s t a n c e s C o n t r o l A c t (T S C A ) in v e n t o r y . T h e f o llo w in g n o t ic e s a r e r e q u ir e d b y 4 0
(EPA)CFR 720.36 (C) for those products not on the inventory list:
(i) These products are supplied solely for use in research and developm ent by or under the supervision of a technically
qualified individual as defined in 40 CFR 720.0 et sec.
(ii) The health risks of these products have not been fully determ ined. A ny inform ation that is or becom es available w ill
be supplied on an MSDS sheet.
WHMIS Classification
Not available.
(Canada)
EINECS Number (EEC)
Not available.
EEC Risk Statements
Not available.
Japanese Regulatory Data Not available.

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Section XVI.
Version 1.0
Validated on 3/16/2001.

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SECTION 16 - ADDITIONAL INFORMATION
N/A