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polyethylene glycol, ammonium sulfate

CAS No.: 859308-25-1

Formula: C2H9NO5S

Molecular Weight: 159.16200

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What is polyethylene glycol, ammonium sulfate

**Introduction to Polyethylene Glycol (PEG) and Ammonium Sulfate** Polyethylene glycol (PEG) is a versatile, water-soluble polymer widely used in pharmaceuticals, cosmetics, and industrial applications due to its biocompatibility, lubricating properties, and ability to stabilize formulations. It comes in various molecular weights, making it adaptable for drug delivery, personal care products, and chemical processing. Ammonium sulfate, a white crystalline salt, is primarily used as a fertilizer but also serves as a protein precipitant in biotechnology, a flame retardant, and a food additive. Its high solubility and nitrogen content make it valuable in agriculture and laboratory settings. Together, PEG and ammonium sulfate play crucial roles in diverse industries, from medicine to agriculture, owing to their unique chemical properties and broad applicability.

Preparation Process: Polyethylene glycol (PEG) is synthesized via the polymerization of ethylene oxide using a catalyst (e.g., alkali hydroxides or metal alkoxides) under controlled temperature and pressure. The molecular weight is adjusted by varying reaction conditions. Ammonium sulfate is produced by neutralizing sulfuric acid with ammonia gas or aqueous ammonia, followed by crystallization, centrifugation, and drying. For a PEG-ammonium sulfate mixture, dissolve PEG in water, add solid ammonium sulfate with stirring until fully dissolved, then concentrate or precipitate the solution as needed. Ensure proper stoichiometry and purification (e.g., dialysis or filtration) for desired applications. Adjust pH if necessary.

Usage Scenarios: Polyethylene glycol (PEG) is a water-soluble polymer widely used as a lubricant, solvent, and thickening agent in pharmaceuticals, cosmetics, and industrial applications. It enhances drug solubility, stabilizes formulations, and serves as a base in ointments and laxatives. In biotechnology, PEG aids in protein crystallization and cell fusion. Ammonium sulfate is primarily employed in fertilizers due to its high nitrogen and sulfur content. In biochemistry, it precipitates proteins via salting out, facilitating purification. It also acts as a flame retardant, food additive (E517), and pH adjuster in vaccines. Both compounds are essential in industrial, agricultural, and scientific fields.

polyethylene glycol, ammonium sulfate Basic Info

Chemical Name polyethylene glycol, ammonium sulfate

Synonyms -

CAS No. 859308-25-1

Molecular Formula C2H9NO5S

Molecular Weight 159.16200

PSA 95.04000

LogP -0.08750

polyethylene glycol, ammonium sulfate Price

Here is a rough price range for "polyethylene glycol, ammonium sulfate" in the 18 countries listed. Note that prices can vary significantly based on grade, purity, quantity, and market conditions:

1. **United States**: $1.50 - $5.00 per kg
2. **China**: $1.00 - $3.50 per kg
3. **Russia**: $1.20 - $4.00 per kg
4. **Germany**: $2.00 - $6.00 per kg
5. **India**: $0.80 - $3.00 per kg
6. **Japan**: $2.50 - $7.00 per kg
7. **Brazil**: $1.50 - $4.50 per kg
8. **South Korea**: $2.00 - $5.50 per kg
9. **Philippines**: $1.20 - $3.80 per kg
10. **United Kingdom**: $2.00 - $6.50 per kg
11. **France**: $2.00 - $6.00 per kg
12. **Mexico**: $1.50 - $4.00 per kg
13. **Canada**: $1.80 - $5.50 per kg
14. **South Africa**: $1.50 - $4.00 per kg
15. **Egypt**: $1.00 - $3.50 per kg
16. **Turkey**: $1.20 - $4.00 per kg
17. **Thailand**: $1.00 - $3.50 per kg
18. **Indonesia**: $1.00 - $3.50 per kg

If no specific price data is available for a country, it is marked as "No results." Prices are approximate and subject to change based on market conditions.