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2-Propanediol
2-Propanediol
2-Propanediol
2-Propanediol
2-Propanediol

1,2-Propanediol CAS 57-55-6

Propylene Glycol
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1000 barrels
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1,2-propanediol (propylene glycol) for cosmetic
 

1,2-Propanediol (often called Propylene Glycol or PG) is a very common and versatile cosmetics raw materials in toiletries and personal care products.

It's a small organic molecule (a diol) that is clear, colorless, odorless, and has a slightly sweet taste. It's miscible with water, meaning it mixes in all proportions, and also with many oils and alcohols. This makes 1,2-Propanediol (Propylene Glycol) an excellent multi-functional ingredient.
 
 
Specification
 
Item Qualification 
 CAS57-55-6
Content (purity)≥99.8%
AppearcanceColorless transparent viscous liquid, odorless or slightly sweet
Relative density (20℃) 1.036~1.038 g/cm
Refractive index (25℃) 1.431~1.435
Water content≤ 0.2%
Heavy metal (Pb,ppm) ≤5
 
 
Application
 
You'll Find 1,2-Propanediol (Propylene Glycol) in
Skincare: Moisturizers, serums, masks, cleansers, toners.
Haircare: Shampoos, conditioners, styling gels.
Makeup: Foundations, mascaras, lipsticks.
Decorative Cosmetics: As a solvent for pigments.
Fragrances: As a carrier for perfume oils.
daily chemical raw materials 1,2-propanediol (propylene glycol) for skin care, hair care products
 
 
daily chemical raw materials 1,2-propanediol (propylene glycol) for skin care, hair care products

 
 
 
Key Functions in Cosmetics
 

  1. Humectant: Like glycerin, 1,2-Propanediol (Propylene Glycol) draws water from the air into the skin, helping to keep it hydrated.

  2. Solvent: It effectively dissolves other ingredients (like fragrances, essential oils, active compounds, and preservatives) that aren't water-soluble, ensuring a uniform formula.

  3. Penetration Enhancer: 1,2-Propanediol (Propylene Glycol) can help other active ingredients penetrate the skin's outer layer more effectively, increasing their potency.

  4. Viscosity Controller: It can adjust the thickness and texture of a product, making lotions feel smoother and less sticky than those using glycerin.

  5. Preservative Booster: While not a preservative itself, 1,2-Propanediol (Propylene Glycol) helps other preservatives work more effectively by lowering water activity in the formula.

  6. Conditioning Agent: In hair care, 1,2-Propanediol (Propylene Glycol) adds moisture, reduces static, and improves manageability.

 
 

FAQ
Q1.Is 1,2-Propanediol (Propylene Glycol)  safe for humans?
A: Yes. For most people, 1,2-Propanediol (Propylene Glycol) is a safe, effective, and well-tolerated workhorse ingredient that improves product performance.
 
Q2: What’s the difference between Propylene Glycol and Glycerin?
A: Both are humectants, but Propylene Glycol is lighter, less sticky, and also acts as a solvent. Glycerin is more viscous and may feel tackier at high concentrations.
 

 
 

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