CAS 25265-71-8 · Ether Diol · Isomer Mixture
Dipropylene Glycol
DPG · C₆H₁₄O₃ · MW 134.17 g/mol
A colorless, nearly odorless ether diol produced as a co-product of propylene glycol manufacture. Commercial DPG is a mixture of three isomers with excellent solvency, low volatility, and a skin-safe profile. It is the fragrance industry's preferred carrier solvent and a versatile industrial glycol for plasticizers, polyurethanes, and specialty coatings. Texas-Chem supplies DPG in industrial and fragrance grades.
Formula
C₆H₁₄O₃
Boiling Point
232 °C
Solubility
Fully water-miscible
Pack Sizes
Drums · Totes
Structural Formula
Commercial DPG is a mixture of three positional isomers — all share the C₆H₁₄O₃ formula
Safety & Regulatory
- NFPA Health
- 1 — Slight hazard
- NFPA Flammability
- 1 — Slight hazard
- NFPA Reactivity
- 0 — Stable
- OSHA PEL
- None established
- ACGIH TLV
- None established
- DOT Hazard Class
- Not regulated
- Skin/Eye
- Mild irritant — use PPE
- Toxicity
- Low acute toxicity
SDS available upon request. Fragrance grade required for cosmetic and personal care applications.
Grades & Packaging
Available Grades
Pack Sizes
Physical & Chemical Properties
| Molecular Formula | C₆H₁₄O₃ |
| Molecular Weight | 134.17 g/mol |
| CAS Number | 25265-71-8 |
| Boiling Point | 232 °C (450 °F) |
| Melting Point | <−80 °C (liquid at room temp) |
| Flash Point | 124 °C (255 °F) — Combustible |
| Density | 1.023 g/cm³ at 20 °C |
| Vapor Pressure | <0.01 kPa at 20 °C |
| Solubility in Water | Miscible in all proportions |
| Viscosity | 75–110 mPa·s at 25 °C |
| Refractive Index | 1.4390 at 20 °C |
| Auto-ignition Temp. | 310 °C (590 °F) |
Industrial Applications
Fragrances & Perfumery
Fragrance-grade DPG is the most widely used carrier and diluent in the perfume industry. Its low odor, excellent solvency for fragrance compounds, and skin-safe profile make it the standard solvent for fine fragrances, body sprays, and scented products.
Personal Care & Cosmetics
Humectant, emollient, and solvent in lotions, creams, deodorants, and hair care products. DPG improves spreadability and skin feel while extending fragrance longevity.
Plasticizers
Feedstock for dipropylene glycol dibenzoate and other specialty plasticizers used in PVC, adhesives, and sealant formulations requiring flexibility and low-temperature performance.
Industrial Solvents
Solvent for printing inks, industrial cleaners, and hydraulic fluids. Industrial-grade DPG provides high solvency for resins and polymers with low volatility and good thermal stability.
Polyurethane Production
Chain extender and polyol component in polyurethane foam and elastomer formulations. DPG contributes to soft-segment flexibility in flexible foam systems.
Insect Repellents
Carrier solvent for DEET and other active insect repellent ingredients in topical formulations. Improves skin absorption and extends active ingredient residence time.
Why Source DPG from Texas-Chem?
- 35+ years supplying industrial glycols to Texas manufacturers
- Industrial and fragrance grades available
- Flexible packaging from 55-gal drums to 275-gal totes
- Competitive pricing backed by top-tier producer relationships
- Technical support and SDS documentation with every order
- Same-day quotes for standard quantities