GHS precautionary statement
P377
Leaking gas fire: do not extinguish unless leak can be stopped safely
- Statement type
- Response (P3xx)
What P377 means
P377 is the GHS (Globally Harmonized System) precautionary statement “Leaking gas fire: do not extinguish unless leak can be stopped safely.” It is a response statement: precautionary statements tell the user how to prevent exposure, respond to incidents, store the product, and dispose of it — they are paired with the hazard (H) statements a product is classified for.
On a finished label, GHS recommends no more than six precautionary statements unless the severity of the hazards requires more — so SDS authors select the most protective, relevant subset from everything that applies. The complete applicable set still belongs in Section 2 of the Safety Data Sheet.
You may also see combined statements such as P302+P352 — a condition (“IF ON SKIN:”) merged with its response (“Wash with plenty of water”) into one line.
Related Response (P3xx) statements
- P301IF SWALLOWED:
- P302IF ON SKIN:
- P303IF ON SKIN (or hair):
- P304IF INHALED:
- P305IF IN EYES:
- P306IF ON CLOTHING:
- P307If exposed:
- P308If exposed or concerned:
- P310Immediately call a POISON CENTER or doctor
- P311Call a POISON CENTER or doctor
- P312Call a POISON CENTER or doctor if you feel unwell
- P313Get medical advice/attention
Authoring a label? GHSLogic classifies your mixture and suggests a balanced, label-ready set of ≤6 precautionary statements automatically — try the free GHS calculators or author one complete SDS free.
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Reference information, not a compliance determination. Statement selection depends on the full classification of your specific substance or mixture and requires review by a qualified professional.