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Safety Data Sheet EN

Acetylene

CAS 74-86-2
EC 200-816-9

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01

Identification

Product identifiers, regulatory numbers, and supplier information

Product Information

Product Name
Acetylene
Product Form
Substance
Product Code
000010030152
Chemical Name
Acetylene

Regulatory Identifiers

CAS Number
74-86-2 Check regulations →
EC Number
200-816-9 Check regulations →
REACH No.
01-2119457406-36, UK-01-3758468859-4-0001

Identified Uses

See the list of identified uses and exposure scenarios in the annex of the safety data sheet. Consumer use. Perform risk assessment prior to use. Metal coating Formulation of mixtures with gas in pressure receptacles. Lubrication of moulds for the manufacture of glass bottles. Using gas as feedstock in chemical processes. Using gas alone or in mixtures for the calibration of analysis equipment. Electronic component manufacture Industrial and professional. Perform risk assessment prior to use. Fuel gas for welding, cutting, heating, brazing and soldering applications. Fuels

Uses advised against

Uses other than those listed above are not supported, contact your supplier for more information on other uses.

Manufacturers & Suppliers

B

BOC Ltd. (UK)

manufacturer

Priestley Road, Worsley, M28 2UT Manchester, Great Britain

0800 111 333

Emergency Contacts

Emergency Contact

0800 111 333

02

Hazard Identification

GHS classification, signal word, pictograms, and hazard statements

Classified danger

Hazard Classifications

Flam. Gas Cat. 1A H220
Chemically unstable gas Cat. A H230
Press. Gas (Dis.) H280

GHS Pictograms

GHS02 - Flammable

GHS02

GHS04 - Compressed gas

GHS04

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 In case of leakage, eliminate all ignition sources.
P403 Store in a well-ventilated place.

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03

Composition / Information on Ingredients

Chemical components, concentration ranges, and hazardous substance identification

Type substance

Contains no other components or impurities which will influence the classification of the product.

Chemical Name CAS Number Concentration Hazardous
Acetylene EC: 200-816-9 74-86-2 100% Yes
04

First Aid Measures

Emergency procedures for chemical exposure incidents

Inhalation

Remove victim to uncontaminated area wearing self contained breathing apparatus. Keep victim warm and rested. Call a doctor. Perform cardiopulmonary resuscitation if breathing stopped.

Symptoms: In high concentrations may cause asphyxiation. Symptoms may include loss of mobility/consciousness. Victim may not be aware of asphyxiation.

Skin contact

Adverse effects not expected from this product.

Eye contact

Adverse effects not expected from this product.

Ingestion

Ingestion is not considered a potential route of exposure.

Immediate Medical Attention

None.

Medical Treatment

None.

05

Firefighting Measures

Extinguishing media, specific hazards, and firefighter protection

Suitable media

Dry powder. Water spray or fog. Carbon dioxide. Shutting off the source of the gas is the preferred method of control. Be aware of the risk of formation of static electricity with the use of CO2 extinguishers. Do not use them in places where a flammable atmosphere may be present.

Unsuitable media

Do not use water jet to extinguish.

Specific hazards

Exposure to fire may cause containers to rupture/explode.

Instructions

Continue water spray from protected position until container stays cool. Do not extinguish a leaking gas flame unless absolutely necessary. Spontaneous/explosive re-ignition may occur. Extinguish any other fire. Use fire control measures appropriate for the surrounding fire. If possible, stop flow of product. Use water spray or fog to knock down fire fumes if possible. Move containers away from the fire area if this can be done without risk.

Firefighter Protection

In confined space use self-contained breathing apparatus. Standard protective clothing and equipment (Self Contained Breathing Apparatus) for fire fighters. Standard EN 469 - Protective clothing for firefighters. Standard - EN 659: Protective gloves for firefighters. EN 15090 Footwear for firefighters. EN 443 Helmets for fire fighting in buildings and other structures. Standard EN 137 - Self-contained open-circuit compressed air breathing apparatus with full face mask.

06

Accidental Release Measures

Spill cleanup procedures, containment, and environmental protection

Emergency procedures

Act in accordance with local emergency plan. Try to stop release. Evacuate area. Eliminate ignition sources. Ensure adequate air ventilation. Stay upwind. Monitor concentration of released product. Consider the risk of potentially explosive atmospheres. Wear self-contained breathing apparatus when entering area unless atmosphere is proved to be safe.

Environmental

Try to stop release.

—

Related Products

Similar products with comparable safety profiles

07

Handling and Storage

Safe handling precautions, storage conditions, and workplace requirements

Handling

Take precautionary measures against static discharge. Keep away from ignition sources (including static discharges). Avoid contact with pure copper, mercury, silver and brass with greater than 65% copper. Use only properly specified equipment which is suitable for this product, its supply pressure and temperature. Purge air from system before introducing gas. Do not smoke while handling product. Avoid suck back of water, acid and alkalis. Only experienced and properly instructed persons should handle gases under pressure. Ensure the complete gas system was (or is regularly) checked for leaks before use. Assess the risk of potentially explosive atmospheres and the need for explosion-proof equipment. Consider the use of only non-sparking tools. The product must be handled in accordance with good industrial hygiene and safety procedures. Operating pressure in piping should be limited to 1.5 bar (gauge) or less. Consider the use of flash back arrestors. Consider pressure relief device(s) in gas installations. Do not breathe gas. Avoid release of product into work area. Ensure equipment is adequately earthed.

Storage

Keep container below 50°C in a well ventilated place. Store containers in the vertical position and properly secured to prevent them from falling over. Container valve guards or caps, when provided, should be in place.

Hygiene

The product must be handled in accordance with good industrial hygiene and safety procedures.

Fire prevention

Take precautionary measures against static discharge. Keep away from ignition sources (including static discharges). Do not smoke while handling product. Consider the use of only non-sparking tools. Consider the use of flash back arrestors.

08

Exposure Controls / PPE

Occupational exposure limits, engineering controls, and protective equipment

Engineering

Provide adequate general and local exhaust ventilation. Gas detectors should be used when toxic gases may be released. Product to be handled in a closed system. Systems under pressure should be regularly checked for leakages. Ensure exposure is below occupational exposure limits (where available). Consider the use of a work permit system e.g. for maintenance activities.

Hands

Wear working gloves when handling gas containers. Standard EN 388 - Protective gloves against mechanical risks, performance level 1 or higher. Recommended types include wrist gloves from leather or synthetic material with equivalent performance, fabric gloves, fabric gloves with leather palms.

Eyes

Wear safety glasses with side shields. Standard EN 166 - Personal eye-protection - specifications

Respiratory

Self contained breathing apparatus (SCBA) or positive pressure airline with mask are to be used in oxygen-deficient atmospheres. Self contained breathing apparatus is recommended, where unknown exposure may be expected, e.g. during maintenance activities on installation systems. Standard EN 137 - Self-contained open-circuit compressed air breathing apparatus with full face mask. Consult respiratory device supplier's product information for the selection of the appropriate device.

Skin/Body

Consider the use of flame resistant anti-static safety clothing. Standard EN ISO 14116 - Limited flame spread materials. Standard EN 1149-5 - Protective clothing: Electrostatic properties. Wear safety shoes while handling containers. Standard EN ISO 20345 - Personal protective equipment - Safety footwear.

Environmental

Refer to local regulations for restriction of emissions to the atmosphere. See section 13 for specific methods for waste gas treatment.

09

Physical and Chemical Properties

Appearance, physical state, melting point, boiling point, and material characteristics

Colour Intensity
---
Metal Corrosion
---
Molecular Weight
26 g/mol
Relative Evaporation Rate
No data available
Relative Density
Not applicable.
Evaporation Rate
---
Flash Point
Not applicable for gases and gas mixtures.
Dynamic Viscosity
0.011 mPa·s No reliable data available.
Crystallisation Point
---
Explosive Limits
---
Vapor Pressure
44 bar(a)
Solubility In Fat
---
Lower Explosive Limit
2.3 vol %
Melting Point
-80.8 °C
Kinematic Viscosity
No reliable data available.
Physical State Data
gas
Appearance
---
Colour
Colourless.
State Under Standard Conditions
---
Odor Threshold
Odour threshold is subjective and inadequate to warn of overexposure.
Solubility In Water
1185 mg/l
Density
0.38 g/cm³ 25 °C
Softening Point
---
Ph
Not applicable for gases and gas mixtures.
Flammability
Extremely flammable gas.
Upper Explosive Limit
100 vol %
Form
Dissolved gas
Boiling Point
-84 °C
Cloud Point
---
Auto Ignition Temperature
305 °C
Voc Content
---
Solubility
---
Bulk Density
---
Solidification Point
---
Vapor Density
---
Decomposition Temperature
Not applicable.
Properties Status
---
Physical State
Gas
Odor
Poor warning properties at low concentrations. Garlic like.
Freezing Point
No data available
Partition Coefficient
0.37
10

Stability and Reactivity

Chemical stability, hazardous reactions, and incompatible materials

Stability

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 decompose violently at high temperature and/or pressure or in the presence of a catalyst. Can form explosive mixture with air. May react violently with oxidants. May react explosively even in the absence of air.

Avoid

Keep away from heat/sparks/open flames/hot surfaces. – No smoking. Avoid moisture in installation systems. High temperature. High pressure.

Incompatible

Forms explosive acetylides with copper, silver and mercury. Do not use alloys containing more than 65% copper. Air, Oxidisers. For additional information on compatibility refer to ISO 11114. Do not use alloys containing more than 43% silver.

Decomposition

Under normal conditions of storage and use, hazardous decomposition products should not be produced.

12

Ecological Information

Environmental toxicity, biodegradation, and bioaccumulation data

The data for this section has not been processed yet.

13

Disposal Considerations

Waste treatment methods, disposal recommendations, and waste codes

The data for this section has not been processed yet.

14

Transport Information

UN numbers, shipping names, transport classes, and regulatory requirements

UN Number
1001
Shipping Name
ACETYLENE, DISSOLVED
Transport Class
2.1
Packing Group
Not applicable
ADR

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 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.

15

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 Acetylene?

The signal word is danger.

What is the physical form of Acetylene?

Acetylene is a gas with colourless. color. It has poor warning properties at low concentrations. garlic like. odor.

What is Acetylene used for?

See the list of identified uses and exposure scenarios in the annex of the safety data sheet. Consumer use. Perform risk assessment prior to use. Metal coating Formulation of mixtures with gas in pressure receptacles. Lubrication of moulds for the manufacture of glass bottles. Using gas as feedstock in chemical processes. Using gas alone or in mixtures for the calibration of analysis equipment. Electronic component manufacture Industrial and professional. Perform risk assessment prior to use. Fuel gas for welding, cutting, heating, brazing and soldering applications. Fuels

What are the hazard statements for Acetylene?

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?

The melting point is -80.8 °C and the boiling point is -84 °C.