Product Identification & Regulatory Data
Official chemical identifiers, CAS numbers, and regulatory compliance information
Basic Product Information
Regulatory Identifiers
Chemical Abstracts Service registry number - unique identifier for chemical substances
European Community number - used for regulatory compliance in EU/EEA
Registration, Evaluation, Authorisation and Restriction of Chemicals - EU regulation compliance
Uses Information
Overview
Acetylene (dissolved) (CAS: 74-86-2 ) commonly used industrial and professional. perform risk assessment prior to use; test gas/calibration gas; laboratory use; chemical reaction / synthesis; use as a fuel; fuel gas for welding, cutting, heating, brazing and soldering applications; contact supplier for more information on uses.
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GHS Hazard Classification & Safety Warnings
Globally Harmonized System (GHS) hazard pictograms, signal words, and safety classifications
Classification Status
Signal Word
Hazard Classifications
GHS Hazard Pictograms & Safety Symbols
GHS02
GHS04
GHS (Globally Harmonized System) pictograms indicate specific chemical hazard categories and safety precautions
Hazard Statements
- H220: Extremely flammable gas
- H230: May react explosively even in the absence of air.
- H280: Contains gas under pressure; may explode if heated
Precautionary Statements
- P202: Do not handle until all safety precautions have been read and understood
- P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking
- P377: Leaking gas fire: Do not extinguish, unless leak can be stopped safely
- P381: Eliminate all ignition sources if safe to do so
- P403: Store in a well-ventilated place
Manufacturers & Suppliers
Authorized suppliers, manufacturers, and distribution network information
Messer Tehnogas AD
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Banjicki put 62 11090 Beograd Serbia
RS
+38 111 353 7210
24/7 Emergency Response
Critical emergency contact numbers for chemical spills, exposure incidents, and medical emergencies
Emergency Contact
112
24h
Elme Messer L
+371 67355445
LV
Chemical Composition & Hazardous Ingredients
Detailed component analysis, concentration ranges, and hazardous substance identification
Product Type
substanceGeneral Composition
Contains no other components or impurities which will influence the classification of the product.
Chemical Components & Hazardous Substances
| Chemical Name | CAS Number | Concentration | Hazardous |
|---|---|---|---|
| Acetylene (dissolved) EC: 200-816-9 | 74-86-2 | 100% | Hazardous |
Additional Information
Full text of H-statements see section 16.
Composition Notes
The cylinder contains a porous material which in some cases contains asbestos fibres. The asbestos fibres are encapsulated in the solid porous material and are not released under normal conditions of use. See section 13 for the disposal of those cylinders. Dimethylformamide is on the Candidate List of Substances of Very High Concern (SVHC) that might be subject to authorization for future placing on the market and uses. For safety reasons, the acetylene is dissolved in acetone (Flam. Liq. 2, Eye Irrit. 2, STOT SE 3) or dimethylformamide (Flam.Liq.3, Repr. 1B, Acute Tox. 4, Eye Irrit. 2) in the gas receptacle. Vapour of the solvent is carried away as impurity when the acetylene is extracted from the gas receptacle. The concentration of the solvent vapour in the gas is lower than the concentration limits to change the classification of the acetylene. Contains no other components or impurities which will influence the classification of the product. Full text of H-statements see section 16.
Emergency First Aid Measures
Critical first aid procedures for chemical exposure incidents and medical emergencies
Inhalation Exposure
Remove victim to uncontaminated area wearing self contained breathing apparatus. Keep victim warm and rested. Call a doctor. Apply artificial respiration if breathing stopped
Symptoms:
In high concentrations may cause asphyxiation. Symptoms may include loss of mobility/consciousness. Victim may not be aware of asphyxiation In low concentrations may cause narcotic effects. Symptoms may include dizziness, headache, nausea and loss of co-ordination
Immediate Medical Attention Required
Obtain medical assistance
Medical Treatment
Obtain medical assistance
Fire Fighting Measures & Emergency Response
Fire suppression methods, extinguishing media, and firefighting safety procedures
Suitable Extinguishing Media
Water spray or fog Dry powder
Unsuitable Extinguishing Media
Do not use water jet to extinguish Carbon dioxide
Specific Fire Hazards
Exposure to fire may cause containers to rupture/explode
Fire Fighting Instructions
Use fire control measures appropriate for the surrounding fire. Exposure to fire and heat radiation may cause gas receptacles to rupture. Cool endangered receptacles with water spray jet from a protected position. If possible, stop flow of product. Use water spray or fog to knock down fire fumes if possible. Do not extinguish a leaking gas flame unless absolutely necessary. Spontaneous/explosive re-ignition may occur. Extinguish any other fire. Continue water spray from protected position until container stays cool. Move containers away from the fire area if this can be done without risk
Firefighter Protection Equipment
In confined space use self-contained breathing apparatus. Standard protective clothing and equipment (Self Contained Breathing Apparatus) for fire fighters.
Accidental Release Measures & Spill Response
Emergency spill cleanup procedures, containment methods, and environmental protection
Emergency Procedures
Try to stop release. Evacuate area. Consider the risk of potentially explosive atmospheres. Wear self-contained breathing apparatus when entering area unless atmosphere is proved to be safe. Eliminate ignition sources. Ensure adequate air ventilation. Act in accordance with local emergency plan. Stay upwind. Try to stop release. Ventilate area.
Related Chemical Substances & Alternative Products
Similar chemicals with comparable safety profiles and industrial applications
Technical Specifications & Material Properties
Physical state, chemical properties, melting point, boiling point, and material characteristics
Safe Handling & Storage Procedures
Industrial handling precautions, storage conditions, and workplace safety requirements
Handling Precautions
• The product must be handled in accordance with good industrial hygiene and safety procedures.
• Only experienced and properly instructed persons should handle gases under pressure.
• Consider pressure relief device(s) in gas installations.
• Ensure the complete gas system was (or is regularily) checked for leaks before use.
• Do not smoke while handling product.
• Use only properly specified equipment which is suitable for this product, its supply pressure and temperature.
• Contact your gas supplier if in doubt.
• Avoid suck back of water, acid and alkalis.
• Assess the risk of potentially explosive atmospheres and the need for explosion-proof equipment.
• Purge air from system before introducing gas.
• Take precautionary measures against static discharge.
• Keep away from ignition sources (including static discharges).
• Consider the use of only non-sparking tools.
• Avoid contact with pure copper, mercury, silver and brass with greater than 65% copper.
• Do not use alloys containing more than 43% silver.
• Operating pressure in piping should be limited to 1.
• 5 bar (gauge) or less due to more stringent national regulations (with maximum diameter DN25).
• Consider the use of flash back arrestors.
• Solvent may accumulate in piping systems.
• For maintenance activities use appropriate resistant gloves, assess the necessity to use a respiratory filter device (specify gloves and filters for DMF or acetone use) and wear safety goggles.
• Avoid breathing the vapour of the solvent.
• Provide adequate ventilation.
• For further information on safe use refer to EIGA code of practice acetylene (EIGA Doc 123).
• Do not breathe gas.
• Avoid release of product into atmosphere.
• Refer to supplier's container handling instructions.
• Do not allow backfeed into the container.
• Protect cylinders from physical damage; do not drag, roll, slide or drop.
• When moving cylinders, even for short distances, use a cart (trolley, hand truck, etc.
• ) designed to transport cylinders.
• Leave valve protection caps in place until the container has been secured against either a wall or bench or placed in a container stand and is ready for use.
• If user experiences any difficulty operating cylinder valve discontinue use and contact supplier.
• Never attempt to repair or modify container valves or safety relief devices.
• Damaged valves should be reported immediately to the supplier.
• Keep container valve outlets clean and free from contaminants particularly oil and water.
• Replace valve outlet caps or plugs and container caps where supplied as soon as container is disconnected from equipment.
• Close container valve after each use and when empty, even if still connected to equipment.
• Never attempt to transfer gases from one cylinder/container to another.
• Never use direct flame or electrical heating devices to raise the pressure of a container.
• Do not remove or deface labels provided by the supplier for the identification of the cylinder contents.
Storage Conditions
• Observe all regulations and local requirements regarding storage of containers.
• Containers should not be stored in conditions likely to encourage corrosion.
• Container valve guards or caps should be in place.
• Containers should be stored in the vertical position and properly secured to prevent them from falling over.
• Stored containers should be periodically checked for general condition and leakage.
• Keep container below 50°C in a well ventilated place.
• Store containers in location free from fire risk and away from sources of heat and ignition.
• Keep away from combustible materials.
• Segregate from oxidant gases and other oxidants in store.
• All electrical equipment in the storage areas should be compatible with the risk of a potentially explosive atmosphere.
General Hygiene Measures
The product must be handled in accordance with good industrial hygiene and safety procedures. Do not smoke while handling product. For maintenance activities use appropriate resistant gloves, assess the necessity to use a respiratory filter device (specify gloves and filters for DMF or acetone use) and wear safety goggles. Avoid breathing the vapour of the solvent.
Fire Prevention Measures
Keep away from ignition sources (including static discharges). Consider the use of flash back arrestors.
Exposure Controls & Personal Protective Equipment
Occupational exposure limits, engineering controls, and required safety equipment
Engineering Controls
Provide adequate general and local exhaust ventilation Systems under pressure should be regularily checked for leakages Gas detectors should be used when flammable gases/vapours may be released The substance is not classified for human health hazards or for environment effects and it is not PBT or vPvB so that no exposure assessment or risk characterisation is required. For tasks where the intervention of workers is required, the substance must be handled in accordance with good industrial hygiene and safety procedures Consider the use of a work permit system e.g. for maintenance activities
Hand Protection
Wear working gloves when handling gas containers Standard EN 388 - Protective gloves against mechanical risk
Eye Protection
Wear safety glasses with side shields Standard EN 166 - Personal eye-protection - specifications
Respiratory Protection
None necessary
Skin/Body Protection
Consider the use of flame resistant anti-static safety clothing Standard EN ISO 14116 - Limited flame spread materials Standard EN ISO 1149-5 - Protective clothing: Electrostatic properties Wear safety shoes while handling containers Standard EN ISO 20345 - Personal protective equipment - Safety footwear
Environmental Exposure Controls
Refer to local regulations for restriction of emissions to the atmosphere. See section 13 for specific methods for waste gas treatment.
Chemical Stability & Reactivity Data
Chemical stability, hazardous reactions, and incompatible materials information
Chemical Stability
Dissolved in a solvent supported in a porous mass Stable under recommended handling and storage conditions (see section 7)
Reactivity
No reactivity hazard other than the effects described in sub-sections below
Hazardous Reactions
May react violently with oxidants Can form explosive mixture with air May react explosively even in the absence of air May decompose violently at high temperature and/or pressure or in the presence of a catalyst
Conditions to Avoid
Keep away from heat/sparks/open flames/hot surfaces. – No smoking High temperature High pressure
Incompatible Materials
Forms explosive acetylides with copper, silver and mercury Do not use alloys containing more than 65% copper Air, Oxidisers Do not use alloys containing more than 43% silver For additional information on compatibility refer to ISO 11114
Hazardous Decomposition Products
Under normal conditions of storage and use, hazardous decomposition products should not be produced
Waste Disposal & Treatment Methods
Waste disposal procedures, treatment methods, and regulatory compliance requirements
Waste Treatment Methods
Waste gas should be flared through a suitable burner with flash back arrestor
Product Disposal Recommendations
Dispose of cylinder via gas supplier only.
Waste Classification Codes
Transportation & Shipping Information
UN numbers, shipping names, transport classes, and regulatory transport requirements
UN Number
1001
Proper Shipping Name
ACETYLENE, DISSOLVED
Transport Hazard Class
2.1
Packing Group
Not applicable
ADR Transport Precautions
Avoid transport on vehicles where the load space is not separated from the driver's compartment Ensure vehicle driver is aware of the potential hazards of the load and knows what to do in the event of an accident or an emergency Before transporting product containers: - Ensure there is adequate ventilation - Ensure that containers are firmly secured - Ensure cylinder valve is closed and not leaking - Ensure valve outlet cap nut or plug (where provided) is correctly fitted - Ensure valve protection device (where provided) is correctly fitted.
IMDG Maritime Transport Precautions
Avoid transport on vehicles where the load space is not separated from the driver's compartment. Ensure vehicle driver is aware of the potential hazards of the load and knows what to do in the event of an accident or an emergency. Before transporting product containers: Ensure there is adequate ventilation. Ensure that containers are firmly secured. Ensure cylinder valve is closed and not leaking. Ensure valve outlet cap nut or plug (where provided) is correctly fitted. Ensure valve protection device (where provided) is correctly fitted.
IATA Air Transport Precautions
Avoid transport on vehicles where the load space is not separated from the driver's compartment. Ensure vehicle driver is aware of the potential hazards of the load and knows what to do in the event of an accident or an emergency. Before transporting product containers: Ensure there is adequate ventilation. Ensure that containers are firmly secured. Ensure cylinder valve is closed and not leaking. Ensure valve outlet cap nut or plug (where provided) is correctly fitted. Ensure valve protection device (where provided) is correctly fitted.
Chemical Safety FAQ & Common Questions
Most frequently asked questions about safety, handling, storage, and regulatory compliance
What other names is Acetylene (dissolved) known by?
Acetylene (dissolved) is also known as: acetyleen, ethyn
What is the hazard signal word for Acetylene (dissolved)?
The signal word for this substance is "danger".
What is the physical form of Acetylene (dissolved)?
Acetylene (dissolved) is a gas. with colourless. color. It has garlic like. poor warning properties at low concentrations. odor.
What is Acetylene (dissolved) used for?
Industrial and professional. Perform risk assessment prior to use; Test gas/Calibration gas; Laboratory use; Chemical reaction / Synthesis; Use as a fuel; Fuel gas for welding, cutting, heating, brazing and soldering applications; Contact supplier for more information on uses
What are the hazard statements for Acetylene (dissolved)?
This substance has 3 hazard statements: H220: Extremely flammable gas H230: May react explosively even in the absence of air. H280: Contains gas under pressure; may explode if heated
What is the melting point of Acetylene (dissolved)?
The melting point is -80.8 °C and the boiling point is -84 °C.