Grades:

Medical Grade, Food Grade, Cosmetic Grade, Industrial Grade

Product Description

Propylene Glycol (PG) is an organic compound with the chemical formula C3​H8​O2​. It has two isomers: 1,2-propylene glycol and 1,3-propylene glycol, with the former being more common.

Main Types: Product Grades and Standards

• Industrial Grade Propylene Glycol: Purity $\ge 99.5\%$, used in chemical, coating, and other industrial fields.
• Food Grade Propylene Glycol (E1520): Complies with FDA and WHO standards, used as a food additive.
• Medical Grade Propylene Glycol: High purity ($\ge 99.9\%$), applied in pharmaceuticals and cosmetics.
• Electronic Grade Propylene Glycol: Ultra-low impurities, used in the electronics industry.

Application Areas

Applications of Propylene Glycol (PG)

① E-cigarette E-liquid:

• Serves as the primary solvent (30-50% proportion), mixed with glycerin to produce vapor.

② Traditional Cigarettes:

• Fragrance Solvent: Dissolves oil-based flavors to promote uniform distribution.
• Humectant Adjuvant: Mixed with glycerin to reduce costs.
• Antidesiccant: Sprayed on filters or tobacco to prevent drying during storage.

Packaging Requirements Table