Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing, and sales of fine chemicals. Headquartered in Jinan, Shandong, China, we are committed to delivering high-quality products to our global partners. Currently, over 90% of our products are exported to developed markets, including North America, Europe, Japan, South Korea, and the Middle East.
Basic Information
- CAS Number: 25265-71-8
- Molecular Formula: C?H??O?
- Molecular Weight: 134.17 g/mol
- Synonyms: Bis(2-hydroxypropyl) ether; 1,1'-Oxydipropan-2-ol; DPG
- Classification: Organic solvent, humectant, fragrance carrier, cosmetic ingredient, chemical intermediate
- EINECS Number: 246-770-3
- MDL Number: MFCD00002939
- Beilstein/Reaxys Number: 1735863
- TSCA Status: TSCA listed
- Customs Code: 2905399000
Physical & Chemical Properties
- Appearance: Colorless transparent liquid; almost odorless; hygroscopic; stable under normal conditions, with a slight sweet and pungent taste.
- Melting Point: -32°C; remains liquid at room temperature, no solidification, and will not freeze under ambient conditions.
- Boiling Point: 229-232°C; low volatility, thermally stable without decomposition at normal boiling range, with a boiling point of 295°C under 101.3 kPa.
- Solubility: Miscible with water; soluble in ethanol, acetone, toluene; excellent solvency for polar polymers and fragrances, and can be miscible with methanol and ether.
- Stability: Stable under ambient conditions; combustible liquid; incompatible with strong oxidants; no polymerization hazard; avoid excessive heat, open flames, and direct sunlight; can undergo esterification, etherification, acetalization, halogenation and other chemical reactions.
- Key Parameters: Density 1.021-1.026 g/cm3 (25°C), 1.0252 g/cm3 at 20°C; Refractive Index 1.440-1.442, 1.439 (n20/D); Flash Point 138°C (closed cup), 118°C (closed cup alternative); Purity ≥99.0%; Water Content ≤0.10%; Acid Value ≤0.05 mgKOH/g; Viscosity 107 mPa·s (25°C); Autoignition Temperature 310°C; Surface Tension 32.0 mN/m (25°C); Vapor Pressure 0.13 kPa at 74°C; Explosion Limit 2.9%-12.7% (V/V).
Uses
Dipropylene glycol is a versatile hydrophilic solvent and humectant widely used in cosmetics, fragrances, coatings, and industrial synthesis. In cosmetics and fragrances, it acts as a carrier, solubilizer, and stabilizer, enhancing fragrance longevity and formula stability, and can be used in moisturizers, cleansers, perfumes, foundations, lipsticks and other products. In coatings and inks, it serves as a high-boiling solvent to improve flow, gloss, and film formation. In industrial applications, it is used as a chemical intermediate for esterification and etherification reactions, a plasticizer, an antifreeze agent, and a lubricant additive, also used in synthetic detergents and textile auxiliaries. Additionally, it functions as a desiccant, heat transfer fluid, and defoamer, with good compatibility and low toxicity for sensitive applications, and can also be used as a solvent for vegetable oils, resins and paraffins.
Packaging & Storage
Packaging: Laboratory grade: 500mL/1L amber glass bottles with Teflon seals to prevent moisture absorption and light exposure. Industrial grade: 200kg/215kg plastic drums, 1000kg IBC totes, 22-ton ISO tanks, labeled with "Combustible Liquid", "Hygroscopic" and GHS hazard information. Storage: Keep in a cool, dry, ventilated warehouse; maintain tight closure to avoid moisture and air ingress; separate from strong oxidants; shelf life 24 months under recommended conditions. Handle with gloves, goggles, and protective clothing; use in ventilated areas to avoid vapor inhalation; wash skin thoroughly after contact; if splashed into eyes, rinse with flowing water for 10-15 minutes and seek medical help; if there is a leakage, use sand, vermiculite or other inert materials to absorb, and properly dispose of waste; do not ingest; store away from fire and heat sources, and use explosion-proof ventilation equipment during operation.
