PPG-200 (Polypropylene glycol 200), chemical name polyoxypropylene diol, molecular formula HO(C3H6O)nH (n≈3-4), average molecular weight between 190~210, is an important chemical intermediate produced by Guoli Chemical. Its functionality is 2, with each end of the molecular chain containing a hydroxyl group (-OH). It can react through ether bonds, ester bonds, or with isocyanates to synthesize a wide variety of fine chemicals with different properties. The product has an active content ≥99%, free alcohol content ≤0.5%, with stable and reliable quality.
PPG-200 is a nonionic surfactant with an HLB value of about 1, strong lipophilicity, and certain water solubility – it is soluble in water and easily soluble in organic solvents such as alcohols, esters, and ketones. Its aqueous solution is weakly acidic to neutral (pH 5.0~7.0 for 1% aqueous solution). It has high chemical resistance to acids, alkalis, and hard water environments, and is not prone to hydrolysis or precipitation under complex chemical conditions. The product also has low foam characteristics, with a surface tension of 31~33 mN/m, demonstrating good wetting, spreading, emulsifying, and dispersing capabilities.
In terms of safety, PPG-200 is a low-toxicity chemical product with an acute oral toxicity LD50 greater than 2000 mg/kg, and a flash point (closed cup) greater than 150°C, so it is not classified as dangerous goods. There are no special hazardous requirements for routine transport and storage, but it may cause mild eye irritation (GHS classification H319). It is recommended to wear protective goggles and chemically resistant gloves during operation, and ensure good ventilation in the work area. The product is hygroscopic and should be stored with the container tightly sealed.
| Parameter | Specification |
|---|---|
| Appearance | Colorless to slightly yellow transparent liquid |
| CAS Number | 25322-69-4 |
| Molecular Formula | HO(C3H6O)nH (n≈3-4) |
| Average Molecular Weight | 190~210 |
| Ion Type | Nonionic |
| HLB Value | 1 |
| Active Content | ≥99% |
| Hydroxyl Value | 540~590 mgKOH/g |
| Density (20°C) | 1.004~1.010 g/cm³ |
| Kinematic Viscosity (40°C) | 30~40 mm²/s |
| pH Value (1% Aqueous Solution) | 5.0~7.0 |
| Acid Value | ≤0.10 mgKOH/g |
| Moisture Content | ≤0.10% |
| Iodine Value | <1 gI₂/100g |
| Unsaturation | <0.01 meq/g |
| Flash Point (Closed Cup) | ≥200°C |
| Melting Point | Approx. -45°C |
| Refractive Index (25°C) | 1.447~1.450 |
| Surface Tension | 31~33 mN/m |
| Heavy Metals (as Pb) | ≤10 mg/kg |
| Arsenic (As) | ≤2 mg/kg |
| Storage Period | 24 months from date of production (use after re-inspection if exceeded) |
| Packaging Specifications | 50kg plastic drum / 200kg plastic drum / IBC tote |
PPG-200, with its excellent comprehensive performance, has mature and widespread applications in multiple industrial fields:
This product is hygroscopic. Keep the container tightly sealed during storage and use. It is recommended to store in a cool (5~35°C), dry, well-ventilated warehouse, away from fire, heat sources, and strong oxidizers. Wear chemical safety goggles and chemically resistant gloves during operation to avoid direct eye contact. In case of accidental eye contact, immediately rinse with plenty of water for at least 15 minutes and seek medical attention. The product is low-toxicity but not edible. Keep away from food and feed, and do not eat, drink, or smoke in the workplace.