Dipropylene Glycol(DPG) CAS 25265-71-8
As a premium Dipropylene Glycol supplier, we are dedicated to providing high-purity, low-odor DPG solutions tailored for the global fragrance, cosmetics, and personal care industries. Our stringent quality control guarantees stable and reliable batches for your formulations.
DPG (Dipropylene Glycol) is a colorless, water-soluble, and moderately viscous liquid with low vapor pressure and exceptionally low toxicity. It exists as a mixture of several structural isomers and is highly valued for its excellent co-solvency and hygroscopic properties.
- Excellent Solvent Properties: It acts as a highly effective solvent and carrier for many organic compounds, including delicate fragrances, resins, oils, and dyes.
- Low Volatility & Odorless: Our fragrance-grade DPG features high purity and minimal odor, ensuring it does not interfere with perfume notes while allowing for extended playtime.
- Superior Compatibility: It is fully miscible with water and many organic solvents, offering remarkable versatility in broad formulation developments.
Dipropylene Glycol Description
NAME: Dipropylene Glycol (DPG)
Synonyms: Oxydipropanol; Di-propylene glycol; Propanol, oxybis-
Molecular Formula: C6H14O3
Molecular Weight: 134.17
CAS NO.: 25265-71-8
Density: 1.0±0.1 g/cm3
Boiling point: 230–232 °C at 760 mmHg
Freezing point: Supercools into a glass-like solid (Pour point approx. -39°C)
Flashing point: 121 °C
Appearance: Clear, colorless, slightly viscous liquid
Solubility: Completely miscible with water, alcohol, and many organic solvents.
Purity: ≥ 99.5%(Fragrance Grade/High Purity Grade)
Properties: DPG is a hydrophilic, colorless, and practically odorless liquid with low volatility. It is stable under normal storage conditions and does not easily oxidize.
Package: Packed in clean iron drums (215 kg net weight per drum) or IBC totes based on customer requirements.
Storage: Store in a tightly closed container in a cool, dry, and well-ventilated area. Avoid exposure to strong oxidizing agents and moisture.
Safety Protection: Oral administration, skin contact and inhalation may be harmful to the human body, so care should be taken to avoid direct contact. Correct operating procedures and safety measures should be followed, such as wearing protective gloves, goggles and respiratory protection equipment.
Dipropylene Glycol Technical
| Item | Index |
| Appearance | Clear colorless viscous liquid |
| Mass Fraction | ≥99.5 |
| Moisture | ≤0.20 |
| Chroma(Pt-Co) | ≤15 |
As a certified Dipropylene Glycol factory, we strictly adhere to high-purity protocols, ensuring each batch of fragrance-grade DPG meets strict low-odor and low-color standards to secure safety and sensory performance in end-products.
Dipropylene Glycol Applications
- Flavors & Fragrances: Widely utilized as a premium solvent, fixative, and diluent for perfumes, essential oils, and aromatic compounds due to its excellent binding capacity and odorless nature.
- Cosmetics & Personal Care: Serves as a coupling agent, humectant, and viscosity modifier in skin cleansers, deodorants, lipsticks, sunscreens, hair curling lotions, and facial creams.
- Industrial Formulations: Used as a vital component in the production of high-performance unsaturated polyester resins, polyurethanes, plasticizers, and as an ingredient in specialized hydraulic fluids or industrial solvents.
FAQs about Dipropylene Glycol (DPG)
Q1: What is the main difference between Fragrance Grade DPG and Industrial Grade DPG?
Fragrance-grade DPG undergoes additional purification to eliminate trace structural impurities that carry specific odors. This ensures the chemical is practically odorless and will not distort or clash with the delicate top, middle, or base notes in perfumes and cosmetic products.
Q2: Is DPG safe for use in direct skin contact leave-on cosmetics?
Yes, Dipropylene Glycol is thoroughly evaluated and widely recognized as safe for cosmetic applications. It has low systemic toxicity and low skin irritation potential at standard formulation concentrations, making it an ideal humectant and solvent for skin care.
Q3: What are your standard packaging options and shipping capacities for DPG?
Our standard export package consists of 215kg brand-new steel drums, with 80 drums loaded per 20GP container (totaling 17.2 Metric Tons with or without pallets). We also support bulk deliveries via IBC totes (1,000kg net each) or ISO tanks for larger industrial orders.
Q4: How does DPG compare to Propylene Glycol (PG) or Glycerin as a solvent?
Compared to standard Propylene Glycol, DPG has a much higher boiling point and lower volatility, meaning it retains moisture and aroma for a longer period. Compared to Glycerin, DPG has superior co-solvency with organic fragrance oils and resins, preventing phase separation in alcohol- or oil-based perfumes.
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