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3,4,5,6-Tetrahydrophthalic anhydride
Also known as: 3,4,5,6-Tetrahydrophthalic anhydride · 2426-02-0 · 1,3-Isobenzofurandione, 4,5,6,7-tetrahydro- · 3,4,5,6-Tetrahydrophthalic acid anhydride
- CAS No.
- 2426-02-0
- Formula
- C8H8O3
- Molar mass
- 152.15 g/mol
- PubChem CID
- 12475
Corrosive
Harmful / Irritant
Health hazard
Summary
3,4,5,6-Tetrahydrophthalic anhydride (C8H8O3), CAS 2426-02-0. Common in labs and industry. Read on for hazards, storage, PPE and mixing rules.
Background
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Physical properties
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Hazards
Attacks skin, eyes and materials.
May cause skin, eye or respiratory irritation.
Serious long-term health effects (CMR, respiratory sensitizer).
Hazard statements
- H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
- H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]
- H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled [Danger Sensitization, respiratory]
- H412: Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]
Storage
Keep at room temperature, below 30 °C, out of direct heat.
Store somewhere well-ventilated and away from any ignition source.
Metal drums or tinted glass, tightly sealed.
Strong acids, strong bases and powerful oxidizers.
Personal protective equipment
Nitrile or butyl, at least 0.4 mm thick.
Safety goggles with side shields.
A2 organic-vapor cartridge if the room isn't well ventilated.
Occupational exposure limits (HSE)
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EU harmonised classification (ECHA C&L)
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Transport
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FDA recalls & enforcement
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Compatibilities
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Open comparator with 3,4,5,6-Tetrahydrophthalic anhydridePractical safety notes
- Corrosive. Wear chemical goggles, faceshield and chemical-resistant gloves. Have an eyewash within reach.
- Irritant / harmful. Ventilate the workspace and avoid skin contact.
- Serious health hazard (carcinogen, mutagen, reprotoxic, respiratory sensitizer). Substitute if possible; otherwise closed systems and medical surveillance.
Derived from the GHS classification shown above. These notes are generic guidance and do not replace the manufacturer's SDS or your local risk assessment.
FAQ
Is 3,4,5,6-Tetrahydrophthalic anhydride flammable?+
3,4,5,6-Tetrahydrophthalic anhydride (CAS 2426-02-0) does not carry the GHS02 flame pictogram in our records. Always confirm with the manufacturer's SDS section 9 (flash point) before assuming a product is non-flammable.
What PPE should I wear when handling 3,4,5,6-Tetrahydrophthalic anhydride?+
Chemical-splash goggles and a faceshield, chemical-resistant gloves (nitrile or butyl) and an apron are the minimum. Work inside a fume hood or use a suitable respirator. Check SDS section 8 for material-specific breakthrough times.
How should 3,4,5,6-Tetrahydrophthalic anhydride be stored?+
Store 3,4,5,6-Tetrahydrophthalic anhydride (CAS 2426-02-0) in tightly closed original containers, in a cool, dry, well-ventilated area away from incompatible materials. Segregate acids from bases and keep away from metals that can be attacked.
Is 3,4,5,6-Tetrahydrophthalic anhydride dangerous for the environment?+
No specific environmental pictogram (GHS09) is listed in our records for 3,4,5,6-Tetrahydrophthalic anhydride, but any chemical waste should be handled through your site's hazardous-waste procedure, not poured down the drain.
Where can I find the official Safety Data Sheet for 3,4,5,6-Tetrahydrophthalic anhydride?+
Official, up-to-date SDS documents are published by each manufacturer (Sigma-Aldrich, Merck, Thermo Fisher, VWR, Carl Roth, etc.) and by regulators such as ECHA and NIOSH. This page is an educational summary and does not replace the manufacturer's SDS.
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