Polypropylene Glycol (25322-69-4)

1. Basic Information

Chemical Name: Polypropylene Glycol

Chinese Aliases: Polypropylene Diol; Polypropylene Glycol

English Name: Polypropylene Glycol (PPG)

Molecular Formula: H–(C₃H₆O)ₙ–OH

Molecular Weight: Depends on polymerization degree (common types: PPG-400, PPG-1000, PPG-2000, PPG-4000, etc.)

CAS Number: 25322-69-4

EINECS Number: 500-039-8

Appearance: Colorless to slightly yellow transparent viscous liquid, with a slight characteristic odor

2. Technical Parameters

| Item | Appearance (25°C) | Acid Value (mgKOH/g) | Color (Pt-Co) | Hydroxyl Value (mgKOH/g) | Avg. Molecular Weight | Moisture (%) |

|------|-----------------|---------------------|---------------|-------------------------|--------------------|--------------|

| PPG200 | Colorless liquid | ≤0.5 | ≤80 | 510–623 | 180–220 | ≤0.5 |

| PPG400 | 255–311 | 360–440 |

| PPG600 | 170–208 | 540–660 |

| PPG800 | 127–156 | 720–880 |

| PPG1000 | 102–125 | 900–1100 |

| PPG1500 | Colorless viscous liquid | 68–84 | 1350–1650 |

| PPG2000 | 51–63 | 1800–2200 |

| PPG4000 | 26–32 | 3500–4400 |

| PPG6000 | 16–21 | 5400–7000 |

| PPG8000 | 12–16 | 7200–8800 |

(The above parameters are for reference only; actual values should follow the factory inspection report.)

3. Applications and Functions

Polypropylene glycol is a polyether polyol with lubrication, softness, and compatibility properties. It is commonly used as a functional component in the following industries:

1. Polyurethane Industry: Can be used as one of the soft-segment polyols for making elastomers, foam materials, adhesives, sealants, and other polyurethane products.

2. Lubricants and Hydraulic Fluids: Used in some water-soluble lubricants, antifreeze, compressor oils, and heat transfer fluid formulations.

3. Daily Chemicals & Personal Care Products: Suitable for conditioners, shaving creams, shampoos, etc., as a softening regulator or solvent structural component.

4. Resin and Ink Systems: Can be part of hot melt adhesives, inks, coatings, etc., to adjust rheology and structural uniformity.

5. Metal Working Fluids: Used as an additive in some metalworking aids to adjust lubrication performance and low-temperature flow.

Note: Specific applications should match the product molecular weight, application process, and industry standards. Please refer to relevant technical documents before use.

4. Packaging Specifications

Packaging: 200kg plastic drums, IBC ton containers, tanker trucks, or can be repackaged into smaller sizes like 25kg as needed.

Storage Conditions: Store in a cool, dry, and ventilated place with the container sealed, away from high temperatures, strong acids, and strong oxidizers.

Transportation: Transport according to non-hazardous material regulations. Take precautions against sunlight, leaks, and contamination.