Publication

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

Abstract

CGA has prepared this publication to state the general principles for labels and markings and give recommended minimum requirements for many hazardous gases and selected liquids. Additional information may be shown by gas suppliers if desired.

The methods of preparing label information established by GHS as required by 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 (WHMIS).

Labels as given herein with regard to cylinder handling and storage information may be modified with respect to format so they can be applied as required to fixed storage vessels, portable tanks, tube trailers, cargo tanks, or other packaging.

Labels shown in this publication are examples of labels and markings that warn of principal physical and health hazards involved in the handling and use of these specific products. The words label or labeling as used in this publication include labels, markings, decals, tags, stenciling, and similar methods of presenting precautionary information.

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Properties

Edition:
12
Published:
December 2025
Status:
Available To the Public
Size:
136 pages
Publisher:
CGA
Special Attributes:
Notes:
Committee:
Hazard Communication

Cataloging

Category
Cylinders     Standards & Guidelines
Keywords
cylinder marking  |  cylinders  |  GHS  |  labeling  |  OSHA Reg Title 29
Related
C-9  |  M-20  |  P-1  |  P-20  |  PS-2  |  V-23