The main component of PEG600MO can be understood chemically as the esterification product of polyethylene glycol 600 (PEG-600) and oleic acid. Its molecular formula can be expressed as C17H33COO(C2H4O)nH, where the degree of polymerization n is approximately 13, and the molecular weight is about 860. The CAS registration number is 9004-96-0, and it is a standardized product clearly documented in the Guoli Chemical database.
In terms of product composition, this product has an extremely high active content (≥99%), with the monoester content (target active substance) accounting for ≥95%, diester content controlled at ≤5%, and free polyethylene glycol residue ≤3%. This means the product has a very high purity monoester structure, i.e., one molecule of oleic acid connected to one molecule of polyethylene glycol chain segment. This structure gives it a balanced hydrophilic (polyoxyethylene chain) and lipophilic (oleic acid fatty chain) property, which is the fundamental source of its excellent emulsifying performance.
The oleic acid component originates from natural fatty acids (usually extracted from vegetable oils) and is an unsaturated fatty acid (iodine value 30~40 gI2/100g), resulting in the product typically appearing as a light yellow to yellow liquid or paste. The polyethylene glycol 600 chain segment provides sufficient hydrophilicity and water solubility, making the product easily soluble in water, ethanol, and acetone, enabling its use as an efficient oil-in-water (O/W) emulsifier.
| Parameter Item | Specification or Value |
|---|---|
| Chemical Name | Polyethylene Glycol 600 Monooleate |
| CAS Number | 9004-96-0 |
| Molecular Formula | C17H33COO(C2H4O)nH, n≈13 |
| Molecular Weight | Approximately 860 |
| Active Content | ≥99% |
| Monoester Content | ≥95% |
| Diester Content | ≤5% |
| Free Alcohol (PEG) | ≤3% |
| Ion Type | Nonionic |
| Appearance | Light yellow to yellow liquid or paste |
| HLB Value | 13.5 |
| Acid Value | ≤2.0 mgKOH/g |
| Hydroxyl Value | 70~95 mgKOH/g |
| Saponification Value | 60~80 mgKOH/g |
Since the main component of this product is clearly a high-purity monoester structure, its HLB value of 13.5 makes it hydrophilic in application, especially suitable as an O/W (oil-in-water) emulsifier and solubilizer:
This product is classified as an irritant under GHS (Skin Irritation Category 2, Serious Eye Irritation Category 2A, Respiratory Irritation Category 3). When operating, wear chemical safety goggles and protective gloves. Use in a well-ventilated area. Avoid contact with strong alkaline environments (the product is not resistant to strong alkalis). For detailed safety information, please refer to the product SDS.