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
Uses Information
Overview
dissolved (CAS: 74-86-2 ) is a colorless, odorless gas. substance commonly used industrial use. use as directed..
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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
- H231: MAY REACT EXPLOSIVELY EVEN IN THE ABSENCE OF AIR AT ELEVATED PRESSURE AND/OR TEMPERATURE
- 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, Open flames, Sparks, Hot surfaces. - 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
- P501: Dispose of contents/container in accordance with container Supplier/owner instructions
- Use and store only outdoors or in a well-ventilated place
Manufacturers & Suppliers
Authorized suppliers, manufacturers, and distribution network information
Praxair, Inc.
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39 Old Ridgebury Road Danbury, CT 06810-5113 - USA
US
1-800-772-9247 (1-800-PRAXAIR)
1-716-879-2146
24/7 Emergency Response
Critical emergency contact numbers for chemical spills, exposure incidents, and medical emergencies
Onsite Emergency
1-800-645-4633
US
CHEMTREC
1-800-424-9300
US
24 hr/day 7 days/week
Within USA (collect calls accepted, Contract 17729)
CHEMTREC
001-703-527-3887
US
24 hr/day 7 days/week
Outside USA (collect calls accepted, Contract 17729)
Chemical Composition & Hazardous Ingredients
Detailed component analysis, concentration ranges, and hazardous substance identification
Product Type
SubstanceGeneral Composition
Acetylene, dissolved (Main constituent)
Chemical Components & Hazardous Substances
| Chemical Name | CAS Number | Concentration | Hazardous |
|---|---|---|---|
| Acetylene, dissolved | N/A | Not specified | Non-hazardous |
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.
Skin Contact
For exposure to liquid, immediately warm frostbite area with warm water not to exceed 105F (41C). Water temperature should be tolerable to normal skin. Maintain skin warming for at least 15 minutes or until normal coloring and sensation have returned to the affected area. In case of massive exposure, remove clothing while showering with warm water. Seek medical evaluation and treatment as soon as possible.
Symptoms:
The liquid may cause frostbite.
Eye Contact
Immediately flush eyes thoroughly with water for at least 15 minutes. Hold the eyelids open and away from the eyeballs to ensure that all surfaces are flushed thoroughly. Contact an ophthalmologist immediately. Get immediate medical attention.
Immediate Medical Attention Required
Contact an ophthalmologist immediately. Get immediate medical attention. Seek medical evaluation and treatment as soon as possible. Obtain medical assistance.
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
Exposure Controls & Personal Protective Equipment
Occupational exposure limits, engineering controls, and required safety equipment
Engineering Controls
An explosion-proof local exhaust system or a mechanical system is acceptable if it can prevent oxygen deficiency and keep hazardous fumes and gases below all applicable exposure limits in the worker's breathing area. During welding, ensure that there is adequate ventilation to keep worker exposure below applicable limits for fumes, gases, and other by-products of welding. Do not breathe fumes or gases. Short-term overexposure to fumes may cause dizziness, nausea, and dryness or irritation of the nose, throat, and eyes, or may cause other similar discomfort.
Hand Protection
Welders gloves (See ANSI Z49.1). Wear leather safety gloves when handling cylinders.
Eye Protection
Wear safety glasses with side shields.
Respiratory Protection
When workplace conditions warrant respirator use, follow a respiratory protection program that meets OSHA 29 CFR 1910.134, ANSI Z88.2, or MSHA 30 CFR 72.710 (where applicable). Use an air-supplied or air-purifying cartridge if the action level is exceeded. Ensure that the respirator has the appropriate protection factor for the exposure level. If cartridge type respirators are used, the cartridge must be appropriate for the chemical exposure (e.g., an organic vapor cartridge). For emergencies or instances with unknown exposure levels, use a self-contained breathing apparatus (SCBA).
Skin/Body Protection
As needed for welding, wear hand, head, and body protection to help prevent injury from radiation and sparks. (See ANSI Z49.1.) At a minimum, this includes welders gloves and protective goggles, and may include arm protectors, aprons, hats, and shoulder protection as well as substantial clothing. Consider the use of flame resistant anti-static safety clothing. Wear safety shoes when handling cylinders.
Environmental Exposure Controls
Refer to local regulations for restriction of emissions to the atmosphere. See section 13 for specific methods for waste gas treatment.
Transportation & Shipping Information
UN numbers, shipping names, transport classes, and regulatory transport requirements
UN Number
UN1001
Proper Shipping Name
Acetylene, dissolved
Transport Hazard Class
2.1
Chemical Safety FAQ & Common Questions
Most frequently asked questions about safety, handling, storage, and regulatory compliance
What other names is dissolved known by?
dissolved is also known as: welding gas
What is the hazard signal word for dissolved?
The signal word for this substance is "danger".
What is the physical form of dissolved?
dissolved is a gas appearing as colorless, odorless gas. with colourless. color. It has garlic like. poor warning properties at low concentrations. odor.
What is the solubility of dissolved?
Water: 1185 mg/l
What is dissolved used for?
Industrial use. Use as directed.
What are the hazard statements for dissolved?
This substance has 3 hazard statements: H220: EXTREMELY FLAMMABLE GAS H231: MAY REACT EXPLOSIVELY EVEN IN THE ABSENCE OF AIR AT ELEVATED PRESSURE AND/OR TEMPERATURE H280: CONTAINS GAS UNDER PRESSURE; MAY EXPLODE IF HEATED
What is the melting point of dissolved?
The melting point is -80.8 C (-113.4F) and the boiling point is -84 C (-119.2F).