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phthalic anhydride

CAS 85-44-9 · C8H4O3

Hazard class

Danger — Irritant / harmful, Corrosive, Health hazard

Pictograms

Irritant / harmfulCorrosiveHealth hazard

H-statements

H302 Harmful if swallowed
H335 May cause respiratory irritation
H315 Causes skin irritation
H318 Causes serious eye damage
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
H317 May cause an allergic skin reaction

Common uses (US EPA CDR)

MonomersIntermediateSolventPlasticizerBinderHardener

Workplace exposure limits

NIOSH REL TWA 6 mg/m3 (1 ppm)
OSHA PEL TWA 12 mg/m3 (2 ppm) NIOSH S179 (II-3)
IDLH 60 mg/m3

Occupational exposure limits — NIOSH Pocket Guide.

Synonyms

PHTHALIC ANHYDRIDE · 1,3-Isobenzofurandione · 2-Benzofuran-1,3-dione · Phthalandione · Retarder esen · 1,3-Dioxophthalan · 1,3-Phthalandione · Phthalic acid anhydride

Molecular weight

148.11 g/mol

Data source

Harmonised classification ECHA — EU CLP Annex VI

Legally binding EU classification adopted by ECHA under CLP Annex VI — the highest-confidence GHS source.

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GHS/CLP classification from authoritative registries (ECHA Annex VI, PubChem). SNRL is a free chemical safety search. Browse categories · API · Console

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