Propylene Glycol (C₃H₈O₂, CAS No. 57-55-6) is a clear, odorless, water-miscible liquid widely used in pharmaceuticals, food, cosmetics, and industry. Known for its hygroscopic and solvent properties, it acts as a humectant, carrier, and stabilizer in various formulations. Fully compliant with USP standards, it ensures high purity and safety for food and pharma applications. Its versatility and reliability make it essential in moisture retention and high-performance formulation systems.
Propylene Glycol’s popularity stems from its balanced combination of chemical stability and compatibility. Here are the core chemical attributes that define its performance:
These attributes ensure Propylene Glycol remains stable under varied thermal and processing conditions, making it ideal for long-term product consistency.
Understanding the molecular structure of Propylene Glycol provides insight into its functional capabilities:
Propylene Glycol’s two hydroxyl groups classify it as a diol, enhancing its effectiveness as a solvent, emulsifier, and carrier in both aqueous and non-aqueous systems. This structure also ensures low toxicity and excellent compatibility, especially in pharmaceutical and food applications.
Propylene Glycol is prized for its clean and user-friendly physical profile:
| Attribute | Specification |
| Appearance | Clear, colourless, and slightly syrupy liquid |
| Odor | Practically odourless and tasteless |
| Density | Approximately 1.036 g/cm³ at 20 °C |
| Viscosity | Medium viscosity; easy to pump and mix |
| Handling & Packaging | Non-reactive with packaging materials; typically available in HDPE drums, IBC tanks, and bulk tankers |
| Shelf Stability | Excellent shelf life when stored in airtight containers away from direct sunlight and moisture |
Propylene Glycol (CAS No. 57-55-6) is industrially produced through two primary processes, both ensuring high purity and yield:
Post-production, Lab Chemicals ensures USP-grade Propylene Glycol through advanced filtration, distillation, and rigorous testing to eliminate impurities like heavy metals, aldehydes, and peroxides.
USP-grade propylene glycol (PAA) is a versatile chemical used across multiple industries. Its applications include:
Pharmaceuticals:
Food & Beverage:
Cosmetics & Personal Care:
Industrial Use:
Laboratory and Chemical Synthesis:
Propylene Glycol (C₃H₈O₂, CAS no 57 55 6) is a versatile, low-toxicity solvent known for its moisture retention, solubility enhancement, and compatibility across industries like pharmaceuticals, personal care, and food. Manufactured to USP-grade standards, it functions effectively as a humectant, emulsifier, and carrier. At Lab Chemicals, we ensure consistent quality, regulatory compliance, and reliable supply. Trust us as your dependable Propylene Glycol supplier for high-performance, application-ready solutions tailored to your formulation needs.
Propylene Glycol USP, also known as PAA-grade propylene glycol, is a high-purity chemical used in pharmaceuticals, food, and cosmetic formulations. Its key applications include serving as a solvent, humectant, and preservative. Industries often prefer USP propylene glycol for formulations requiring strict quality standards.
Yes. USP-grade propylene glycol (PAA) meets rigorous standards for purity and safety, making it suitable for food, beverage, and pharmaceutical applications. It complies with USP testing specifications and is free from harmful impurities.
The CAS number for USP propylene glycol (PAA) is 57-55-6. This identifier is crucial for ensuring compliance in pharmaceutical and industrial supply chains.
High-quality PAA-grade propylene glycol typically has the following specifications:
These specifications ensure suitability for pharmaceutical, cosmetic, and food-grade applications.
Absolutely. USP propylene glycol (PAA) is widely used in cosmetics as a moisturizer, stabilizer, and carrier for active ingredients. Its high purity ensures safety for topical and personal care formulations.
PAA-grade propylene glycol meets USP standards, ensuring high purity, minimal impurities, and suitability for pharmaceutical and food applications. Industrial-grade variants may contain contaminants, making them unsuitable for sensitive applications.
USP-grade propylene glycol (PAA) is typically available in drums, bulk containers, or as per customer specifications. Packaging is designed to maintain product purity during transport and storage.
You can purchase USP-grade propylene glycol (PAA) from reputable suppliers who provide certified products, technical specifications, and safety data sheets (SDS). Ensure the supplier complies with USP testing specifications for authenticity.
Store PAA propylene glycol in a tightly sealed container, away from direct sunlight and extreme temperatures. Proper storage ensures long shelf life and preserves pharmaceutical-grade quality.
Yes. USP propylene glycol (PAA) often comes with certifications like USP compliance, ISO, FSSAI (for food applications), and WHO-GMP (for pharmaceutical use). These certifications ensure safety, reliability, and high-quality standards.
Understanding the molecular structure of Propylene Glycol provides insight into its functional capabilities:
Propylene Glycol’s two hydroxyl groups classify it as a diol, enhancing its effectiveness as a solvent, emulsifier, and carrier in both aqueous and non-aqueous systems. This structure also ensures low toxicity and excellent compatibility, especially in pharmaceutical and food applications.
Propylene Glycol is prized for its clean and user-friendly physical profile:
| Attribute | Specification |
| Appearance | Clear, colourless, and slightly syrupy liquid |
| Odor | Practically odourless and tasteless |
| Density | Approximately 1.036 g/cm³ at 20 °C |
| Viscosity | Medium viscosity; easy to pump and mix |
| Handling & Packaging | Non-reactive with packaging materials; typically available in HDPE drums, IBC tanks, and bulk tankers |
| Shelf Stability | Excellent shelf life when stored in airtight containers away from direct sunlight and moisture |
Propylene Glycol (CAS No. 57-55-6) is industrially produced through two primary processes, both ensuring high purity and yield:
Post-production, Lab Chemicals ensures USP-grade Propylene Glycol through advanced filtration, distillation, and rigorous testing to eliminate impurities like heavy metals, aldehydes, and peroxides.
USP-grade propylene glycol (PAA) is a versatile chemical used across multiple industries. Its applications include:
Pharmaceuticals:
Food & Beverage:
Cosmetics & Personal Care:
Industrial Use:
Laboratory and Chemical Synthesis:
Propylene Glycol (C₃H₈O₂, CAS no 57 55 6) is a versatile, low-toxicity solvent known for its moisture retention, solubility enhancement, and compatibility across industries like pharmaceuticals, personal care, and food. Manufactured to USP-grade standards, it functions effectively as a humectant, emulsifier, and carrier. At Lab Chemicals, we ensure consistent quality, regulatory compliance, and reliable supply. Trust us as your dependable Propylene Glycol supplier for high-performance, application-ready solutions tailored to your formulation needs.
Propylene Glycol USP, also known as PAA-grade propylene glycol, is a high-purity chemical used in pharmaceuticals, food, and cosmetic formulations. Its key applications include serving as a solvent, humectant, and preservative. Industries often prefer USP propylene glycol for formulations requiring strict quality standards.
Yes. USP-grade propylene glycol (PAA) meets rigorous standards for purity and safety, making it suitable for food, beverage, and pharmaceutical applications. It complies with USP testing specifications and is free from harmful impurities.
The CAS number for USP propylene glycol (PAA) is 57-55-6. This identifier is crucial for ensuring compliance in pharmaceutical and industrial supply chains.
High-quality PAA-grade propylene glycol typically has the following specifications:
These specifications ensure suitability for pharmaceutical, cosmetic, and food-grade applications.
Absolutely. USP propylene glycol (PAA) is widely used in cosmetics as a moisturizer, stabilizer, and carrier for active ingredients. Its high purity ensures safety for topical and personal care formulations.
PAA-grade propylene glycol meets USP standards, ensuring high purity, minimal impurities, and suitability for pharmaceutical and food applications. Industrial-grade variants may contain contaminants, making them unsuitable for sensitive applications.
USP-grade propylene glycol (PAA) is typically available in drums, bulk containers, or as per customer specifications. Packaging is designed to maintain product purity during transport and storage.
You can purchase USP-grade propylene glycol (PAA) from reputable suppliers who provide certified products, technical specifications, and safety data sheets (SDS). Ensure the supplier complies with USP testing specifications for authenticity.
Store PAA propylene glycol in a tightly sealed container, away from direct sunlight and extreme temperatures. Proper storage ensures long shelf life and preserves pharmaceutical-grade quality.
Yes. USP propylene glycol (PAA) often comes with certifications like USP compliance, ISO, FSSAI (for food applications), and WHO-GMP (for pharmaceutical use). These certifications ensure safety, reliability, and high-quality standards.
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