Material Safety Data Sheet
1,4-Diethynylbenzene    

Section 1 - Chemical Product and Company Identification
MSDS Name: 1,4-Diethynylbenzene
Catalog Numbers: SC-20588

Section 2 - Composition, Information on Ingredients 
CAS#935-14-8
Chemical Name: 1,4-Diethynylbenzene 
Percent  95%min
EINECS/ELINCS: Not available
Hazard Codes: Xi
Risk Phrases: 43-52/53

Section 3 - Hazards Identification 
EMERGENCY OVERVIEW
May be harmful by ingestion and inhalation. Material is irritating to mucous membranes and upper respiratory tract.

3.1 Classification of the substance or mixture
Classification according to Regulation (EC) No 1272/2008 [EU-GHS/CLP]
Skin sensitization (Category 1)
Classification according to EU Directives 67/548/EEC or 1999/45/EC
May cause sensitization by skin contact. Harmful to aquatic organisms, may cause long-term adverse
effects in the aquatic environment.
3.2 Label elements
Labelling according Regulation (EC) No 1272/2008 [CLP]
Pictogram 
Signal word: Warning
Hazard statement(s)
H317 May cause an allergic skin reaction.
Precautionary statement(s)
P280 Wear protective gloves.
Supplemental Hazard Statements: none

Potential Health Effects
Inhalation: May be harmful if inhaled. May cause respiratory tract irritation.
Ingestion: May be harmful if swallowed.
Skin: May be harmful if absorbed through skin. May cause skin irritation.
Eyes: Causes eye irritation.
Chronic: Limited evidence of a carcinogenic effect. 

Section 4 - First Aid Measures 
4.1 Description of first aid measures
General advice: Consult a physician. Show this safety data sheet to the doctor in attendance.
If inhaled: If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.
In case of skin contact: Wash off with soap and plenty of water. Consult a physician.
In case of eye contact: Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
If swallowed: Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.
4.2 Most important symptoms and effects, both acute and delayed: To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.
4.3 Indication of any immediate medical attention and special treatment needed: no data available

Section 5 - Fire Fighting Measures 
5.1 Extinguishing media
Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
5.2 Special hazards arising from the substance or mixture: Carbon oxides
5.3 Advice for firefighters: Wear self contained breathing apparatus for fire fighting if necessary.
5.4 Further information: no data available

Section 6 - Accidental Release Measures 
6.1 Personal precautions, protective equipment and emergency procedures
Use personal protective equipment. Avoid dust formation. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Avoid breathing dust.
6.2 Environmental precautions
Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided.
6.3 Methods and materials for containment and cleaning up
Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for disposal.
6.4 Reference to other sections: For disposal see section 13.

Section 7 - Handling and Storage 
7.1 Precautions for safe handling: Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Provide appropriate exhaust ventilation at places where dust is formed.Normal measures for preventive fire protection.
7.2 Conditions for safe storage, including any incompatibilities: Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
7.3 Specific end uses: no data available

Section 8 - Exposure Controls, Personal Protection 
8.1 Control parameters
Components with workplace control parameters
8.2 Exposure controls
Appropriate engineering controls: Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.
Personal protective equipment
Eye/face protection: Face shield and safety glasses Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection: Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands.The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.
Body Protection: Complete suit protecting against chemicals, The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace.
Respiratory protection: For nuisance exposures use type P95 (US) or type P1 (EU EN 143) particle respirator.For higher level protection use type OV/AG/P99 (US) or type ABEK-P2 (EU EN 143) respirator cartridges. Use respirators and components tested and approved under appropriate government standards
such as NIOSH (US) or CEN (EU).

Section 9 - Physical and Chemical Properties 
Physical State: Powder.
Color: Light brown.
Odor: Not available.
pH: Not available.
Vapor Pressure: No data reported .  
Viscosity: Not available.
 Boiling Point: No data reported 
Freezing/Melting Point: 94 - 98 °C - lit.
Autoignition Temperature: Not available
 Flash Point: No data reported
 Decomposition Temperature: Not available
Water Solubility: Not available
 Specific Gravity/Density:
Molecular Formula: C10H6
Molecular Weight: 126.16 

Section 10 - Stability and Reactivity 
Chemical Stability: Not available
Conditions to Avoid: Incompatible materials.
Incompatibilities with Other Materials: Oxidizing agents.
Hazardous Decomposition Products: Nitrogen oxides, carbon monoxide, carbon dioxide.
Hazardous Polymerization: Has not been reported.

Section 11 - Toxicological Information 
RTECS#: Not available
CAS#167762-80-3
LD50/LC50: RTECS: Not available
Carcinogenicity:
No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC..
Epidemiology: No information found
Other Studies: The toxicological properties have not been fully investigated. See actual entry in RTECS for complete information.
Additional Information: RTECS: CZ5643000

Section 12 - Ecological Information 
Additional ecological information:
General notes: no data available

Section 13 - Disposal Considerations 
13.1 Waste treatment methods
Product: Offer surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed professional waste disposal service to dispose of this material. Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber.
Contaminated packaging: Dispose of as unused product.

Section 14 - Transport Information 
14.1 UN number
ADR/RID: -                         IMDG: -                                                  IATA: -
14.2 UN proper shipping name
ADR/RID: Not dangerous goods
IMDG: Not dangerous goods
IATA: Not dangerous goods
14.3 Transport hazard class(es)
ADR/RID: -                      IMDG: -                                                     IATA: -
14.4 Packaging group
ADR/RID: -                      IMDG: -                                                     IATA: -
14.5 Environmental hazards
ADR/RID: no                   IMDG Marine pollutant: no                       IATA: no
14.6 Special precautions for user
no data available

Section 15 - Regulatory Information 
European Labeling in Accordance with EC Directives
      Hazard Class:Xi
        Risk Phrases:
             R43 May cause sensitization by skin contact.
             R52/53 Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
       Safety Phrases:
            S 37/39 Wear suitable gloves and eye/face protection

Section 16 - Additional Information
While the information herein is believed to be reliable, it is furnished without warranty of any kind. It shall be used only as a guide. We assume no liabilities from the use of this product or information contained herein.