Molekula
Propylene Glycol USP
Propylene Glycol USP is a colorless, odorless, viscous liquid used as a solvent, humectant, and carrier in pharmaceuticals, cosmetics, and food products. It is chemically identified as CH3CH(OH)CH2CH2OH, with a molecular weight of 76.09 g/mol and a CAS number of 57-55-6. It is stable at ambient storage conditions and carries no signal word. Molekula supplies Propylene Glycol USP from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Propylene Glycol USP is a colorless, odorless, viscous liquid used as a solvent, humectant, and carrier in pharmaceuticals, cosmetics, and food products. It is chemically identified as CH3CH(OH)CH2CH2OH, with a molecular weight of 76.09 g/mol and a CAS number of 57-55-6. It is stable at ambient storage conditions and carries no signal word. Molekula supplies Propylene Glycol USP from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Viscous liquid that is practically odorless and colorless |
| Refractive Index | 1.4310 - 1.4330 |
| Water | ≤0.1% |
| Conclusion | Fulfils the current Pharmacopeial Specifications: USP, Ph. Eur. and FCC |
| Heavy metals | ≤5ppm |
| Arsenic | ≤ 2ppm |
| Lead | ≤1ppm |
| Specific Gravity | 1.0350 - 1.0370 |
| Cadmium | ≤0.50ppm |
| Iron | ≤0.30ppm |
| Chlorides | ≤1ppm |
| Distillation Range | 185.0 -189.0°C |
| Mercury | ≤0.10ppm |
| Organic Volatile Impurities | - |
| Clarity | 3 |
| Colour (APHA) | ≤5 |
| Reducing Substances | - |
| Sulfated ash | ≤70ppm |
| Acidity (calculate as Acetic acid) | ≤0.0020% |
| Sulfates | ≤60ppm |
| Oxidising Substances | - |
| Diethylene glycol (%) | ≤0.10% |
| Monopropylene glycol, % | ≥99% |
| Dipropylene glycol, % | ≤0.1% |
| Monoethylene glycol, % | ≤0.10% |
| Neutralisation number, mgKOH/g | ≤0.0100mgKOH/ |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Shelf Life | 24 months |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| CAS Number | 57-55-6 |
| Molecular Formula | CH3CH(OH)CH2CH2OH |
| Molecular Weight | 76.09 |
| SMILES | CC(CO)O |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| Tariff Code | 2905320090 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
For research and industrial use only
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Propylene Glycol USP used for?
It is commonly used as a solvent, humectant, and plasticizer in pharmaceuticals, cosmetics, and food products.
What is the chemical formula and molecular weight of Propylene Glycol USP?
The formula is CH3CH(OH)CH2CH2OH with a molecular weight of 76.09 g/mol.
How should Propylene Glycol USP be stored?
It should be stored at ambient temperature, protected from moisture and contamination.
What grade of Propylene Glycol USP is available?
Molekula supplies Propylene Glycol USP, meeting USP specifications for pharmaceutical use.
Can Molekula supply Propylene Glycol USP in bulk?
Yes, Molekula offers bulk quantities for industrial and commercial applications.
What documentation comes with a purchase of Propylene Glycol USP?
Each order includes a Certificate of Analysis (CoA) and, upon request, a Certificate of Compliance (CoC) or other regulatory documentation.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.