Dipropylene Glycol
ELHUMETM – DPG
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Dipropylene Glycol (DPG) is a low-toxicity glycol, supplied as a clear, colourless, nearly odourless viscous liquid used as a solvent, humectant and fragrance carrier. It functions as a solvent /…
CAS Number
25265-71-8
HS Code
2909.49.60
INCI Name
Dipropylene Glycol
Molecular Formula
C6H14O3
Dipropylene Glycol
ELHUMETM – DPG
Dipropylene Glycol (DPG) is a low-toxicity glycol, supplied as a clear, colourless, nearly odourless viscous liquid used as a solvent, humectant and fragrance carrier. It functions as a solvent / fragrance carrier, humectant, chemical intermediate, plasticiser across fragrance &…
CAS Number
25265-71-8
INCI Name
Dipropylene Glycol
HS Code
2909.49.60
Molecular Formula
C6H14O3
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Product Specification
Physical Properties
| Property | Specification |
|---|---|
| Appearance | Clear, colorless liquid |
| Odor | Practically odourless, slightly ethereal |
| Molecular Weight | 134.17 g/mol |
| Density (20°C) | 1.035-1.038 g/cm³ |
| Viscosity (20°C) | 107 cP |
| Refractive Index (20°C) | 1.439 - 1.442 |
| Ph (20°C) | 7 - 8 |
| Assay / Purity | 99.50 min W/% |
| Color (Pt-Co) | 10 max (Hazen) |
| Moisture | 0.10 max W/% |
| Acidity (As Acetic Acid) | 0.010 max W/% |
Chemical Properties
| Property | Specification |
|---|---|
| Incompatibilities | Avoid contact with strong oxidizing agents, strong acids, strong bases, isocyanates, and zinc. May attack some plastics, rubber, and coatings. |
| Hazardous Decomposition Products | Decomposition products can include carbon oxides (CO, CO2), aldehydes, alcohols, ethers, organic acids, and other toxic vapors. |
Thermal Properties
| Property | Specification |
|---|---|
| Melting Point | -40 °C |
| Boiling Point | 230 °C |
| Flash Point | 128 - 138 °C (closed cup) |
| Autoignition Temperature | 310 - 350 °C |
| Thermal Stability | Stable under recommended storage conditions. Exposure to elevated temperatures can cause product to decompose. |
Processing Methods & Reference Formulations
A. Reed Diffuser Base
A typical formulation for home fragrance reed diffusers.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Fragrance Oil | 20.00 - 40.00% |
| Dipropylene Glycol | 60.00 - 80.00% |
| Perfumer's Alcohol | 0.00 - 10.00% |
B. Alcohol-Free Perfume Oil
A simple, two-ingredient formulation for a roll-on or dab-on perfume.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Fragrance / Essential Oils | 15.00 - 25.00% |
| Dipropylene Glycol | 75.00 - 85.00% |
C. Body & Room Spray
A water-based spray formulation where Dipropylene Glycol acts as a co-solvent and humectant.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Fragrance Oil | 5.00 - 10.00% |
| Dipropylene Glycol | 10.00 - 20.00% |
| Solubilizer (e.g., Polysorbate 20) | 5.00 - 15.00% |
| Deionized Water | q.s. to 100% |
| Preservative | As required |
Dosing Guidelines
A. Dosing by Application
| Application | Recommended / Max Dosage |
|---|---|
| Perfumes & Colognes | 1.0 - 50.0% |
| Alcohol-Free Perfume Oils | 75.0 - 85.0% |
| Lotions, Creams & Mists | 1.0 - 20.0% |
| Skincare (General) | 2.0 - 10.0% |
| Deodorant Gels | 10.0 - 15.0% |
| Reed Diffusers | 20.0 - 80.0% |
About Dipropylene Glycol
Dipropylene glycol (DPG) is a low-toxicity, nearly odourless glycol valued as a solvent, humectant, coupling agent and chemical intermediate. Its most visible use is as a fragrance-grade carrier and solvent in perfumery and cosmetics, prized for its very low odour and excellent ability to dissolve fragrance oils; industrially, it is a key raw material for unsaturated polyester resins, plasticisers and lubricants. DPG's appeal is its combination of good solvency, humectancy, low volatility, low toxicity and near-absence of odour, which makes it a safer, milder glycol than many alternatives. It is supplied in a regular (industrial) grade and a high-purity, low-odour fragrance grade for perfumery and personal care. Industrial buyers sourcing Dipropylene Glycol (DPG) in bulk also track dipropylene glycol pricing closely, since it feeds directly into their downstream costs which is why working with an established dipropylene glycol supplier and distributor like Elchemy matters.
- High Solvency: Effective in dissolving a wide range of substances, enhancing product stability and performance.
- Function: Solvent, Carrier, Humectant, Viscosity Control Agent, Fixative, Plasticizer.
- Non-Toxic and Non-Irritating: Safe for use in cosmetics and personal care products, ensuring consumer safety.
- Features (Fragrance Grade): High purity (>99.5%), low, neutral odor profile, excellent solubility, low volatility, low skin irritation potential, and low toxicity.
- Moisture Retention: Acts as a humectant, retaining moisture in formulations for improved texture and hydration.
- Benefits: Acts as a superior carrier for fragrances, ensures zero interference with delicate scent notes, enhances scent retention and longevity, and improves the stability of cosmetic formulations.
- Versatile Carrier: Ensures even distribution of active ingredients in industrial applications, enhancing product efficacy.
- Antifreeze Properties: Provides protection against freezing in various systems, ensuring operational efficiency.
About Dipropylene Glycol
Dipropylene glycol (DPG) is a low-toxicity, nearly odourless glycol valued as a solvent, humectant, coupling agent and chemical intermediate. Its most visible use is as a fragrance-grade carrier and solvent in perfumery and cosmetics, prized for its very low odour and excellent ability to dissolve fragrance oils; industrially, it is a key raw material for unsaturated polyester resins, plasticisers and lubricants. DPG's appeal is its combination of good solvency, humectancy, low volatility, low toxicity and near-absence of odour, which makes it a safer, milder glycol than many alternatives. It is supplied in a regular (industrial) grade and a high-purity, low-odour fragrance grade for perfumery and personal care. Industrial buyers sourcing Dipropylene Glycol (DPG) in bulk also track dipropylene glycol pricing closely, since it feeds directly into their downstream costs which is why working with an established dipropylene glycol supplier and distributor like Elchemy matters.
- High Solvency: Effective in dissolving a wide range of substances, enhancing product stability and performance.
- Function: Solvent, Carrier, Humectant, Viscosity Control Agent, Fixative, Plasticizer.
- Non-Toxic and Non-Irritating: Safe for use in cosmetics and personal care products, ensuring consumer safety.
- Features (Fragrance Grade): High purity (>99.5%), low, neutral odor profile, excellent solubility, low volatility, low skin irritation potential, and low toxicity.
- Moisture Retention: Acts as a humectant, retaining moisture in formulations for improved texture and hydration.
- Benefits: Acts as a superior carrier for fragrances, ensures zero interference with delicate scent notes, enhances scent retention and longevity, and improves the stability of cosmetic formulations.
- Versatile Carrier: Ensures even distribution of active ingredients in industrial applications, enhancing product efficacy.
- Antifreeze Properties: Provides protection against freezing in various systems, ensuring operational efficiency.
Regulatory Compliance
| Region | Max Allowed Level | Notes | Certification Body |
|---|---|---|---|
| United States | 50% | The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Dipropylene Glycol is safe for use in cosmetics. It is also permitted for use in food-contact articles like adhesives under FDA regulations. | - |
| European Union | - | Not listed as a prohibited or restricted substance in the EU Cosmetics Regulation (EC) No 1223/2009. It is included in the CosIng database without restrictions. | - |
| Canada | - | Not found on Health Canada's Cosmetic Ingredient Hotlist (a list of substances that are restricted or prohibited in cosmetics). | - |
| India | - | Not found in the lists of prohibited or restricted substances by the Bureau of Indian Standards for cosmetics. | - |
| Japan | - | Not found in the lists of restricted or prohibited ingredients under the Standards for Cosmetics by the MHLW. | - |
| Australia | - | Listed on the Australian Inventory of Industrial Chemicals (AIIC) with no specific restrictions noted for cosmetic use. | - |
| China | - | Listed in the Inventory of Existing Cosmetic Ingredients in China (IECIC 2021). | - |
| Republic of Korea | - | No specific restrictions found in the regulations set by the Ministry of Food and Drug Safety (MFDS). | - |
| ASEAN | - | Not found in the annexes of the ASEAN Cosmetic Directive which list prohibited or restricted substances. | - |
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