3,4-dimethylthieno[2,3-b]thiophene-5-carbaldehyde

Modify Date: 2024-01-02 18:43:54

3,4-dimethylthieno[2,3-b]thiophene-5-carbaldehyde Structure
3,4-dimethylthieno[2,3-b]thiophene-5-carbaldehyde structure
Common Name 3,4-dimethylthieno[2,3-b]thiophene-5-carbaldehyde
CAS Number 159709-36-1 Molecular Weight 196.28900
Density 1.337g/cm3 Boiling Point 346.9ºC at 760mmHg
Molecular Formula C9H8OS2 Melting Point 147-149ºC
MSDS N/A Flash Point 163.6ºC

 Names

Name 3,4-dimethylthieno[2,3-b]thiophene-5-carbaldehyde
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.337g/cm3
Boiling Point 346.9ºC at 760mmHg
Melting Point 147-149ºC
Molecular Formula C9H8OS2
Molecular Weight 196.28900
Flash Point 163.6ºC
Exact Mass 196.00200
PSA 73.55000
LogP 3.39210
Vapour Pressure 5.58E-05mmHg at 25°C
Index of Refraction 1.708

 MSDS

Name: 3 4-Dimethylthieno[2 3-b]thiophene-2-carbaldehyde 97% Material Safety Data Sheet
Synonym: 3,4-Dimethylthieno[b]thiophene-2-carboxaldehyd
CAS: 159709-36-1
Section 1 - Chemical Product MSDS Name:3 4-Dimethylthieno[2 3-b]thiophene-2-carbaldehyde 97% Material Safety Data Sheet
Synonym:3,4-Dimethylthieno[b]thiophene-2-carboxaldehyd

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
159709-36-1 3,4-Dimethylthieno[2,3-b]thiophene-2-c 97% unlisted
Hazard Symbols: None Listed.
Risk Phrases: None Listed.

Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Not available.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation. May be harmful if absorbed through the skin.
Ingestion:
May cause irritation of the digestive tract. May be harmful if swallowed.
Inhalation:
May cause respiratory tract irritation. May be harmful if inhaled.
Chronic:
Not available.

Section 4 - FIRST AID MEASURES
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Get medical aid. Wash mouth out with water.
Inhalation:
Remove from exposure and move to fresh air immediately.
Notes to Physician:
Treat symptomatically and supportively.

Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or chemical foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container.

Section 7 - HANDLING and STORAGE
Handling:
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Storage:
Store in a cool, dry place. Store in a tightly closed container.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 159709-36-1: Personal Protective Equipment Eyes: Not available.
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 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES

Physical State: Solid
Color: tan
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 147 - 149 deg C
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density:
Molecular Formula: C9H8OS2
Molecular Weight: 196

Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Not available.
Conditions to Avoid:
Incompatible materials.
Incompatibilities with Other Materials:
Strong oxidizing agents, reducing agents, amines.
Hazardous Decomposition Products:
Carbon monoxide, oxides of sulfur, carbon dioxide.
Hazardous Polymerization: Has not been reported

Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 159709-36-1 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
3,4-Dimethylthieno[2,3-b]thiophene-2-carbaldehyde - Not listed by ACGIH, IARC, or NTP.

Section 12 - ECOLOGICAL INFORMATION


Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION

IATA
No information available.
IMO
No information available.
RID/ADR
No information available.

Section 15 - REGULATORY INFORMATION

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 159709-36-1: No information available.
Canada
None of the chemicals in this product are listed on the DSL/NDSL list.
CAS# 159709-36-1 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 159709-36-1 is not listed on the TSCA inventory.
It is for research and development use only.


SECTION 16 - ADDITIONAL INFORMATION
N/A

 Safety Information

Hazard Codes Xi: Irritant;
HS Code 2934999090

 Precursor & DownStream

Precursor  2

DownStream  0

 Customs

HS Code 2934999090
Summary 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

3,5-dimethyl thieno(2,3-b) thiophene 2-carboxaldehyde
2-formyl-3,4-dimethylthieno[2,3-b]thiophene
3,4-Dimethyl-thieno[2,3-b]thiophene-2-carbaldehyde
3,4-Dimethylthieno[2,3-b]thiophene-2-carboxaldehyde