← All calculators

GHS flammable liquid calculator

Flammable-liquid category is a mixture-level property — based on the blend's own flash point (and initial boiling point), not a sum of component categories. Enter the mixture's flash point to get the GHS category.

Deterministic calculation from the data you enter. A draft result for review by a qualified professional — not a compliance determination. Nothing is stored.

Needed only to distinguish Category 1 (≤ 35°C).

GHS flammable-liquid categories

Cat 1: flash point < 23°C and initial boiling point ≤ 35°C · Cat 2: flash point < 23°C · Cat 3: 23–60°C · Cat 4: 60–93°C (US only — not in EU CLP / Canada WHMIS).

Tired of transcribing hazard data off your supplier SDSs? Sign up and extract it automatically from the actual SDS — which also captures supplier-specific impurities a manual entry can't.

Classify the whole mixture, not one endpoint

GHSLogic runs every GHS endpoint from your real supplier SDSs, then drafts a review-ready SDS and labels — with the rule path behind every result.