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Safety Data Sheet EN

Acetylene

CAS 74-86-2

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01

Identification

Product identifiers, regulatory numbers, and supplier information

Product Information

Product Name
Acetylene
Chemical Name
Acetylene
Synonyms
Acetylene (dissolved), Ethyne, welding gas

Regulatory Identifiers

CAS Number
74-86-2 Check regulations →
REACH No.
01-2119457406-36

Identified Uses

Industrial and professional use. Perform risk assessment prior to use.

Uses advised against

None.

Manufacturers & Suppliers

A

Air Products Plc

manufacturer

2 Millennium Gate, Westmere Drive, Crewe, Cheshire

+44(0)3457 020202

Emergency Contacts

Emergency Contact

+44(0)8085 020202

NHS Direct in England or Wales

0845 46 47

NHS 24 in Scotland

08454 24 24 24

02

Hazard Identification

GHS classification, signal word, pictograms, and hazard statements

Classified danger

Hazard Classifications

Flam. Gas Cat. 1A H220
Unst. Expl. 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

Concentration is nominal. For the exact product composition, please refer to technical specifications. 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.

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

Notes

Refer to section 16 for full text of each relevant hazard statement (H). Dimethylformamide is listed in Annex XVII of REACH, and is subject to restrictions on its use. The applicable information from the exposure scenarios for this product are contained in the main body of the SDS.

04

First Aid Measures

Emergency procedures for chemical exposure incidents

Inhalation

In case of shortness of breath, give oxygen. Move to fresh air. If breathing has stopped or is labored, give assisted respirations. Supplemental oxygen may be indicated. If the heart has stopped, trained personnel should begin cardiopulmonary resuscitation immediately. Seek medical advice.

Symptoms: shortness of breath, Dizziness. Salivation. Nausea. Vomiting. Loss of mobility/consciousness.

Skin contact

IF exposed or concerned: Get medical advice/attention.

Symptoms: Adverse effects not expected from this product.

Eye contact

In case of direct contact with eyes, seek medical advice.

Immediate Medical Attention

If exposed or concerned: Get medical attention/advice.

Medical Treatment

If exposed or concerned: Get medical attention/advice.

05

Firefighting Measures

Extinguishing media, specific hazards, and firefighter protection

The data for this section has not been processed yet.

06

Accidental Release Measures

Spill cleanup procedures, containment, and environmental protection

The data for this section has not been processed yet.

Related Products

Similar products with comparable safety profiles

07

Handling and Storage

Safe handling precautions, storage conditions, and workplace requirements

The data for this section has not been processed yet.

08

Exposure Controls / PPE

Occupational exposure limits, engineering controls, and protective equipment

Engineering

Provide natural or explosion-proof ventilation that is adequate to ensure flammable gas does not reach its lower explosive limit.

Hands

Wear work gloves when handling gas containers. Standard EN 388 - Protective gloves against mechanical risk.

Eyes

Safety glasses recommended when handling cylinders. Standard EN 166 - Personal eye-protection.

Respiratory

High concentrations that can cause rapid suffocation are within the flammable range and should not be entered.

Skin/Body

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. Safety shoes are recommended when handling cylinders. Standard EN ISO 20345 - Personal protective equipment - Safety footwear.

Environmental

If applicable, refer to the extended section of the SDS for further information on CSA.

09

Physical and Chemical Properties

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

Explosive Limits
---
Voc Content
---
Physical State
Dissolved gas.
Density
0.0011 g/cm3 (0.069 lb/ft3) at 21 ( 70 F) Note: (as vapor)
Softening Point
---
Physical State Data
gas
Kinematic Viscosity
---
Boiling Point
- 120 F (-84.7 )
Properties Status
---
Form
---
Partition Coefficient
0.37
Crystallisation Point
---
Cloud Point
---
Colour Intensity
---
State Under Standard Conditions
---
Decomposition Temperature
780
Solubility In Fat
---
Auto Ignition Temperature
305
Solubility In Water
1.185 g/l
Vapor Pressure
638.14 psia (44.00 bara) at 68 F (20 )
Freezing Point
-113 F (-80.8 )
Lower Explosive Limit
2.3 %(V)
Evaporation Rate
Not applicable for gases and gas mixtures.
Solidification Point
---
Molecular Weight
26 g/mol
Upper Explosive Limit
100 %(V)
Melting Point
-113 F (-80.8 )
Flammability
Refer to product classification in Section 2
Metal Corrosion
---
Relative Density
Not applicable.
Appearance
---
Vapor Density
---
Colour
Colorless
Odor Threshold
Odour threshold is subjective and inadequate to warn of overexposure.
Flash Point
Not applicable for gases and gas mixtures.
Bulk Density
---
Ph
Not applicable for gases and gas mixtures.
Odor
Garlic-like. Poor warning properties at low concentrations.
Relative Evaporation Rate
---
Solubility
---
Dynamic Viscosity
---
10

Stability and Reactivity

Chemical stability, hazardous reactions, and incompatible materials

The data for this section has not been processed yet.

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
UN1001
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.

IMDG

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.

IATA

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.

15

Regulatory Information

Chemical regulations, safety assessments, and compliance status

The data for this section has not been processed yet.

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Frequently Asked Questions

Common questions about safety, handling, and properties

What other names is Acetylene known by?

Acetylene is also known as: Acetylene (dissolved), Ethyne, welding gas

What is the hazard signal word for Acetylene?

The signal word is danger.

What is the physical form of Acetylene?

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

What is Acetylene used for?

Industrial and professional use. Perform risk assessment prior to use.

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 -113 F (-80.8 ) and the boiling point is - 120 F (-84.7 ).