2,2-dimethoxypropane

CAS Number
77-76-9
EC Number
201-056-0
Abbreviation
DMP

What is 2,2-dimethoxypropane?

2,2-Dimethoxypropane (CAS 77-76-9), also known as DMP or acetone dimethyl acetal, is a reactive solvent and dehydrating agent.

Where is 2,2-dimethoxypropane used?

  • Pharmaceutical synthesis: protecting carbonyl and hydroxyl groups during multi-step API manufacturing
  • Biotech and life sciences: rapid chemical dehydrant for biological sample preparation, particularly electron microscopy tissue processing
  • Flavoring intermediate: contributes to production of certain aroma compounds
  • Water scavenger and protecting group reagent enabling moisture-sensitive reactions and controlled anhydrous conditions
  • It also acts as a solvent where conventional polar aprotic solvents are unsuitable due to moisture sensitivity.

Good to know: Buyers should confirm purity thresholds and water content specifications with suppliers as a critical quality parameter.

Commercial specifications

  • Clear liquid in standard drum and IBC quantities
  • Bulk availability for industrial-scale procurement
  • High-purity grades available for pharmaceutical and analytical laboratory requirements

Other Names (Synonyms)

Acetone dimethyl acetal|Propane, 2,2-dimethoxy-|Acetone dimethyl ketal|66P41R0030|RefChem:81029|DMP

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What are the physical properties of 2,2-dimethoxypropane?

Melting Point -47 °C
Boiling Point 83 °C
Density 0.86199 g/cm³ (solid) @ Temp: 90 °C; Press: 750 Torr
Flash Point 12 °F
Appearance colourless liquid
Color Clear colorless
Form Liquid
Water Solubility 18 g/100 mL (25 ºC)
Vapor Pressure 60 mm Hg ( 15.8 °C)
Refractive Index n 20/D 1.378(lit.)

How is 2,2-dimethoxypropane classified and handled safely? Learn More

Danger
GHS02· Flammable GHS07· Irritant

Hazard Statements

H225 Highly Flammable liquid and vapor
H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation

Precautionary Statements

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.

Which trade and regulatory codes apply to 2,2-dimethoxypropane?

HS Code 29110000
UN Number 1993
ADR Class 3
Packing Group II
Storage Class 3 - Flammable liquids
WGK (Germany) 2
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