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1,3-Dimethyl-2-imidazolidinone

Also known as: 1,3-Dimethyl-2-imidazolidinone · 80-73-9 · Dimethyl imidazolidinone · Rhonite 1

CAS No.
80-73-9
Formula
C5H10N2O
Molar mass
114.15 g/mol
PubChem CID
6661
GHS pictograms
GHS pictogram: CorrosiveCorrosive
GHS pictogram: ToxicToxic
GHS pictogram: Harmful / IrritantHarmful / Irritant
GHS pictogram: Health hazardHealth hazard
2D structure of 1,3-Dimethyl-2-imidazolidinone
2D structure · PubChem CID 6661

Summary

1,3-Dimethyl-2-imidazolidinone (C5H10N2O), CAS 80-73-9. Common in labs and industry. Read on for hazards, storage, PPE and mixing rules.

Background

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Hazards

GHS pictogram: Corrosive
Corrosive (GHS05)

Attacks skin, eyes and materials.

GHS pictogram: Toxic
Toxic (GHS06)

May be fatal even in small doses.

GHS pictogram: Harmful / Irritant
Harmful / Irritant (GHS07)

May cause skin, eye or respiratory irritation.

GHS pictogram: Health hazard
Health hazard (GHS08)

Serious long-term health effects (CMR, respiratory sensitizer).

Hazard statements

  • H302
  • H311
  • H315
  • H318
  • H319
  • H361
  • H373

Storage

Temperature

Keep at room temperature, below 30 °C, out of direct heat.

Ventilation

Store somewhere well-ventilated and away from any ignition source.

Containers

Metal drums or tinted glass, tightly sealed.

Keep away from

Strong acids, strong bases and powerful oxidizers.

Personal protective equipment

Gloves

Nitrile or butyl, at least 0.4 mm thick.

Eye protection

Safety goggles with side shields.

Respirator

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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Practical safety notes

  • Corrosive. Wear chemical goggles, faceshield and chemical-resistant gloves. Have an eyewash within reach.
  • Acute toxicity. Work under a fume hood, restrict access, keep a specific antidote plan available.
  • 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 1,3-Dimethyl-2-imidazolidinone flammable?+

1,3-Dimethyl-2-imidazolidinone (CAS 80-73-9) 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 1,3-Dimethyl-2-imidazolidinone?+

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 1,3-Dimethyl-2-imidazolidinone be stored?+

Store 1,3-Dimethyl-2-imidazolidinone (CAS 80-73-9) 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 1,3-Dimethyl-2-imidazolidinone dangerous for the environment?+

No specific environmental pictogram (GHS09) is listed in our records for 1,3-Dimethyl-2-imidazolidinone, 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 1,3-Dimethyl-2-imidazolidinone?+

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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