Identification
Product identifiers, regulatory numbers, and supplier information
Product Information
- Product Name
- 2-Butyne
- Product Code
- 254339
- Chemical Name
- 2-Butyne
Regulatory Identifiers
- CAS Number
- 503-17-3 Check regulations →
- REACH No.
- A registration number is not available for this substance as the substance or its uses are exempted from registration or the annual tonnage does not require a registration.
Identified Uses
Laboratory chemicals, Manufacture of substances
Manufacturers & Suppliers
Merck Life Science BV/SRL
manufacturer
Brusselsesteenweg 288, B-3090 OVERIJSE
+32 (0)3 899-1301
Emergency Contacts
CHEMTREC
+(32) 28 083237
Anti-poison centre
070 245245
Hazard Identification
GHS classification, signal word, pictograms, and hazard statements
Hazard Classifications
GHS Pictograms
GHS02
GHS07
Hazard Statements
Precautionary Statements
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Composition / Information on Ingredients
Chemical components, concentration ranges, and hazardous substance identification
| Chemical Name | CAS Number | Concentration | Hazardous |
|---|---|---|---|
| But-2-yne EC: 207-962-2 | 503-17-3 | 100% | Yes |
First Aid Measures
Emergency procedures for chemical exposure incidents
After inhalation: fresh air.
Take off immediately all contaminated clothing. Rinse skin with water/ shower.
After eye contact: rinse out with plenty of water. Call in ophthalmologist. Remove contact lenses.
After swallowing: immediately make victim drink water (two glasses at most). Consult a physician.
Firefighting Measures
Extinguishing media, specific hazards, and firefighter protection
For this substance/mixture no limitations of extinguishing agents are given.
Carbon oxides. Pay attention to flashback. Vapours are heavier than air and may spread along floors. Forms explosive mixtures with air at ambient temperatures.
Remove container from danger zone and cool with water.
Firefighter Protection
Stay in danger area only with self-contained breathing apparatus. Prevent skin contact by keeping a safe distance or by wearing suitable protective clothing.
Accidental Release Measures
Spill cleanup procedures, containment, and environmental protection
Do not breathe vapours, aerosols. Avoid substance contact. Ensure adequate ventilation. Keep away from heat and sources of ignition. Evacuate the danger area, observe emergency procedures, consult an expert.
Do not let product enter drains.
Take up with liquid-absorbent material (e.g. Chemizorb®).
Materials: liquid-absorbent material (e.g. Chemizorb®)
Related Products
Similar products with comparable safety profiles
Handling and Storage
Safe handling precautions, storage conditions, and workplace requirements
Keep away from open flames, hot surfaces and sources of ignition. Take precautionary measures against static discharge.
Keep container tightly closed in a dry and well-ventilated place. Keep away from heat and sources of ignition.
Immediately change contaminated clothing. Apply preventive skin protection. Wash hands and face after working with substance.
Keep away from open flames, hot surfaces and sources of ignition.
Exposure Controls / PPE
Occupational exposure limits, engineering controls, and protective equipment
Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Safety glasses
required when vapours/aerosols are generated. Our recommendations on filtering respiratory protection are based on the following standards: DIN EN 143, DIN 14387 and other accompanying standards relating to the used respiratory protection system. Recommended Filter type: Filter type AX. The entrepreneur has to ensure that maintenance, cleaning and testing of respiratory protective devices are carried out according to the instructions of the producer. These measures have to be properly documented.
required. Flame retardant antistatic protective clothing.
Do not let product enter drains. Risk of explosion.
Physical and Chemical Properties
Appearance, physical state, melting point, boiling point, and material characteristics
Stability and Reactivity
Chemical stability, hazardous reactions, and incompatible materials
The product is chemically stable under standard ambient conditions (room temperature).
Vapours may form explosive mixture with air.
No data available
Warming.
Oxidizing agents
In the event of fire: see section 5
Ecological Information
Environmental toxicity, biodegradation, and bioaccumulation data
The data for this section has not been processed yet.
Disposal Considerations
Waste treatment methods, disposal recommendations, and waste codes
The data for this section has not been processed yet.
Transport Information
UN numbers, shipping names, transport classes, and regulatory requirements
- UN Number
- 1144
- Shipping Name
- CROTONYLENE
- Transport Class
- 3
- Packing Group
- I
Regulatory Information
Chemical regulations, safety assessments, and compliance status
The data for this section has not been processed yet.
Frequently Asked Questions
Common questions about safety, handling, and properties
What is the hazard signal word for 2-Butyne?
The signal word is danger.
What is the physical form of 2-Butyne?
2-Butyne is a liquid with colourless color. It has no data available odor.
What is 2-Butyne used for?
Laboratory chemicals, Manufacture of substances
What are the hazard statements for 2-Butyne?
This substance has 4 hazard statements:
- H224: Extremely flammable liquid and vapour.
- H315: Causes skin irritation.
- H319: Causes serious eye irritation.
- H335: May cause respiratory irritation.
What is the melting point of 2-Butyne?
The melting point is -32 °C and the boiling point is 27 °C.