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Acetylene (dissolved)

DANGER Gas. SDS/MSDS
Chemical Identity

Product Identification & Regulatory Data

Official chemical identifiers, CAS numbers, and regulatory compliance information

Basic Product Information

Product Name
Acetylene (dissolved)
Product Form
dissolved
Product Code
RS-C2H2-001
Chemical Name
Acetylene
Synonyms
acetyleen, ethyn

Regulatory Identifiers

CAS Number

Chemical Abstracts Service registry number - unique identifier for chemical substances

EC Number

European Community number - used for regulatory compliance in EU/EEA

REACH Registration Number
01-2119457406-36

Registration, Evaluation, Authorisation and Restriction of Chemicals - EU regulation compliance

Uses Information

Identified Uses
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

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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Organize and access your chemical safety data with ease.

Safety Classification

GHS Hazard Classification & Safety Warnings

Globally Harmonized System (GHS) hazard pictograms, signal words, and safety classifications

Classification Status

Classified

Signal Word

danger (Danger)

Hazard Classifications

Flam. Gas Category 1 H220
Chem. Unst. Gas Category A H230
Press. Gas (Dis.) H280

GHS Hazard Pictograms & Safety Symbols

GHS02 GHS Hazard Pictogram: Flammable hazard - Fire risk materials including gases, liquids, and solids

GHS02

GHS04 GHS Hazard Pictogram: Compressed gas hazard - Pressurized gases that may explode if heated

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
Supply Chain

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

Emergency

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

Composition

Chemical Composition & Hazardous Ingredients

Detailed component analysis, concentration ranges, and hazardous substance identification

Product Type

substance

General 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.

First Aid

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 Safety

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.

Spill Response

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.

Alternatives

Related Chemical Substances & Alternative Products

Similar chemicals with comparable safety profiles and industrial applications

Section 9

Technical Specifications & Material Properties

Physical state, chemical properties, melting point, boiling point, and material characteristics

Physical State
Gas.
Critical Property
Physical State Data
gas
State Under Standard Conditions
Not available
Appearance
Not available
Colour
Colourless.
Colour Intensity
Not available
Form
Not available
Odor
Garlic like. Poor warning properties at low concentrations.
Odor Threshold
Odour threshold is subjective and inadequate to warn of overexposure.
Ph
Not applicable.
Melting Point
-80.8 °C
Critical Property
Boiling Point
-84 °C
Critical Property
Flash Point
Not applicable for gases and gas mixtures.
Critical Property
Freezing Point
Not available
Softening Point
Not available
Solidification Point
Not available
Cloud Point
Not available
Crystallisation Point
Not available
Relative Evaporation Rate
Not available
Evaporation Rate
Not applicable for gases and gas mixtures.
Vapor Pressure
44 bar(a)
Vapor Density
Not available
Relative Density
0.9
Bulk Density
Not available
Density
Not available
Flammability
2.3 - 100 vol %
Upper Explosive Limit
100 vol %
Lower Explosive Limit
2.3 vol %
Explosive Limits
Not available
Auto Ignition Temperature
305 °C
Decomposition Temperature
635 °C
Solubility
Not available
Partition Coefficient
0.37
Solubility In Water
1185 mg/l
Solubility In Fat
Not available
Molecular Weight
26 g/mol
Voc Content
Not available
Metal Corrosion
Not available
Dynamic Viscosity
Not available
Kinematic Viscosity
Not available
Properties Status
Not available
Handling & Storage

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.

Section 8

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.

Section 10

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

Section 13

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

16 05 04 * Gases in pressure containers (including halons) containing dangerous substances EWC
Section 14

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.

FAQ

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.