C-7: Guide to Classification and Labeling of Compressed Gases

The compressed gas industry has developed precautionary labels and markings for use on containers of compressed gases, cryogenic liquids, and other hazardous materials for the purpose of identifying the contents, warning of principal physical, health, and environmental hazards, and providing appropriate precautionary information following the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) as allowed by the U.S. Occupational Safety and Health Administration (OSHA).

GHS was established by the United Nations (UN) to develop a means of hazard classification and communication via labels, pictograms, and consistent hazard language on a global basis. Internationally, competent authorities may adopt the GHS in whole or in part and may also require additional information on labels.

This publication has been prepared to state the general principles for labels and markings and give recommended minimum requirements for many hazardous gases and selected liquids.

The methods of preparing label information established by GHS as required by Title 29 of the U.S. Code of Federal Regulations (29 CFR) Part 1910.1200 (OSHA's Hazard Communication Standard) have been followed to meet the specific labeling and marking needs of the compressed gas industry. OSHA's Hazard Communication Standard and the currently referenced edition of GHS shall be used in conjunction with this publication when classifying products and creating labels.

This publication is not intended to address state, provincial, territorial, or local regulatory label and marking requirements such as the "Proposition 65" warnings required by the state of California. This publication does not fully address the requirements of the Canadian Hazardous Product Regulations-Workplace Hazardous Materials Information System 2015 (WHMIS 2015), which has adopted the Fifth Revised Edition of GHS. The example labels in this guideline for Canadian transport comply with WHMIS 2015.
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April 2020
Available To the Public
134 pages
Special Attributes:
Corrected 05/06/2020.
Hazard Communication
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