Educational content for trained professionals. Not a Safety Data Sheet, not medical advice. In an emergency, call your local poison control or emergency services immediately. Terms of use.
Triisopropyl phosphite
Also known as: TRIISOPROPYL PHOSPHITE · 116-17-6 · tripropan-2-yl phosphite · Phosphorous acid, tris(1-methylethyl) ester
- CAS No.
- 116-17-6
- Formula
- C9H21O3P
- Molar mass
- 208.23 g/mol
- PubChem CID
- 8304
Toxic
Harmful / Irritant
Summary
Triisopropyl phosphite (C9H21O3P), CAS 116-17-6. 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
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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Open comparator with Triisopropyl phosphitePractical safety notes
- Acute toxicity. Work under a fume hood, restrict access, keep a specific antidote plan available.
- Irritant / harmful. Ventilate the workspace and avoid skin contact.
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 Triisopropyl phosphite flammable?+
Triisopropyl phosphite (CAS 116-17-6) 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 Triisopropyl phosphite?+
Safety glasses with side shields and nitrile gloves are the baseline. Work inside a fume hood or use a suitable respirator. Check SDS section 8 for material-specific breakthrough times.
How should Triisopropyl phosphite be stored?+
Store Triisopropyl phosphite (CAS 116-17-6) in tightly closed original containers, in a cool, dry, well-ventilated area away from incompatible materials.
Is Triisopropyl phosphite dangerous for the environment?+
No specific environmental pictogram (GHS09) is listed in our records for Triisopropyl phosphite, 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 Triisopropyl phosphite?+
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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