Labelling and marking

4. Labelling and marking
4.1. General
4.1.1. The competent authority, or a body approved or recognised by the
competent authority, should establish requirements for the marking and labelling of
chemicals to enable persons handling or using chemicals to recognise and distinguish
between them, both when receiving and when using them, so that they may be used
safely (see paragraph 2.1.8 (criteria and requirements)). Existing criteria for marking
and labelling established by other competent authorities may be followed where they are
consistent with the provisions of this paragraph and are encouraged where this may
assist uniformity of approach.
4.1.2. Suppliers of chemicals should ensure that chemicals are marked and
hazardous chemicals are labelled, and that revised labels are prepared and provided to
employers whenever new relevant safety and health information becomes available (see
paragraphs 2.4.1 (suppliers’ responsibilities) and 2.4.4 (classification)).
4.1.3. Employers receiving chemicals that have not been labelled or marked
should not use them until the relevant information is obtained from the supplier or from
other reasonably available sources. Information should be obtained primarily from the
supplier but may be obtained from other sources listed in paragraph 3.3.1 (sources of
information), with a view to marking and labelling in accordance with the requirements
of the national competent authority, prior to use.
4.2. Nature and type of marking
4.2.1. All chemicals should be marked so as to indicate their identity.
4.2.2. The mark chosen should be such as to enable users to distinguish between
chemicals during receipt, handling and use. Marking may be by chemical identity,
common name, trade name, code name or number or other name, so long as the identity
so established is unique and, in the case of a hazardous chemical, is identical to that used
on the label and the chemical safety data sheet. Inclusion of the name of the supplier on
the shipped container or packaging is recommended.
4.2.3. Waste chemicals should be marked as such.
4.2.4. The marking of chemicals may be impracticable because of the size of the
container or nature of the package. They should, however, be readily identifiable by
such means as tagging or accompanying documents.
4.2.5. Each container or layer of packaging should be marked. The particulars
should always be visible on the container or package during each stage of the supply and
use of the chemicals.

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