Polypropylene Glycol, Poly Propylene Glycol, Propylene Oxide Polymer, Polypropylene Oxide, Case Polyol, PPG, 25322-69-4

POLYPROPYLENE GLYCOL (PPG)

PRODUCT IDENTIFICATION INFORMATION

CHEMICAL STRUCTURE

    Polypropylene Glycol (PPG)
    
    General Structure:
    
    HO-CH(CH₃)-CH₂-O-[CH(CH₃)-CH₂-O]ₙ-CH(CH₃)-CH₂-OH
    
    Key Features:
    - Methyl side groups (-CH₃) providing hydrophobicity
    - Hydroxyl end groups (-OH) for reactivity
    - Linear or branched chain structure
    - Polyether polyol class

Molecular Formula: HO–(CH(CH₃)CH₂O)ₙ–H
Functional Groups: Terminal hydroxyl groups (-OH)
Structure: Contains methyl side groups; linear or branched chain
Chemical Class: Polyether polyol

SECTION 1: CHEMICAL IDENTITY AND DEFINITION

SECTION 2: PHYSICAL AND CHEMICAL PROPERTIES

SECTION 3: PPG GRADES BY MOLECULAR WEIGHT

SECTION 4: DETAILED PROPERTIES BY GRADE

SECTION 5: MANUFACTURER PRODUCT LISTS

BASF Products (Pluriol® P Series)

Manufacturer Reference Data

SECTION 6: FUNCTIONAL PROPERTIES AND MECHANISM OF ACTION

SECTION 7: MAIN APPLICATION AREAS

7.1 Cosmetics and Personal Care

7.2 Food Industry

7.3 Industrial Applications

7.4 Polyurethane Production

7.5 Industrial Lubricants

7.6 Pharmaceutical Industry

7.7 Other Applications

SECTION 8: PPG VS PEG COMPARISON

SECTION 9: QUALITY SPECIFICATIONS

SECTION 10: TOXICOLOGICAL PROFILE

Health Effects:

SECTION 11: GHS CLASSIFICATION AND LABELING

GHS Classification (Compliant with CLP and UN GHS):

Note: PPG is generally considered safe (low toxicity) and is approved for many food, cosmetic, and pharmaceutical applications.

Hazard Statements (H-Codes):

Precautionary Statements (P-Codes):

NFPA 704 Hazard Classification:

SECTION 12: FIRST AID MEASURES

SECTION 13: FIREFIGHTING MEASURES

SECTION 14: STORAGE AND SHELF LIFE

SECTION 15: PACKAGING OPTIONS

SECTION 16: TRANSPORT INFORMATION

SECTION 17: REGULATORY STATUS

SECTION 18: OTHER NAMES AND SYNONYMS

SECTION 19: SUMMARY TABLE

SECTION 20: CRITICAL WARNINGS AND BEST PRACTICES

CRITICAL WARNINGS:

• Very low toxicity. Generally considered safe for most applications.

• Slightly combustible. Flash point >200°C; Not readily ignitable.

• Hygroscopic. Absorbs moisture from air. Keep containers tightly closed.

• Slippery. PPG spills on floors create a significant slip hazard. Clean up immediately.

• Incompatibilities: Keep away from strong oxidizing agents, strong acids, and strong bases (at high temperatures).

• Eye Irritant: May cause mild eye irritation. Use eye protection.

• Food and Pharmaceutical Use: Only appropriate grades (food/pharma grade) should be used.

• Polyurethane Production: Moisture must be strictly avoided as water reacts with isocyanates.

BEST PRACTICE RECOMMENDATIONS:

• Cosmetics and Personal Care: Use appropriate MW grade (PPG 400-600 for water-based, PPG 1000-2000 for oil-based); Provides humectant, emollient, and carrier properties.

• Polyurethane Production: Use as polyol component; Reacts with diisocyanates (MDI, TDI) to form polyurethanes; Provides soft segments, flexibility, low-temperature performance, and hydrolysis resistance; PPG-based polyurethanes are more hydrophobic than PEG-based.

• Food Industry: Use as emulsifier and texture modifier in margarine and butter; Anti-freezing agent and texture stabilizer in ice cream; Plasticizer and anti-sticking agent in confectionery; Viscosity modifier in chocolate.

• Industrial Lubricants: Use as base fluid in hydraulic fluids, compressor oils, gear oils, and metalworking fluids; Provides good lubricity, low volatility, high viscosity index, and excellent thermal stability; Biodegradable and low aquatic toxicity.

• Defoamer Applications: Higher MW grades (PPG 2000-4000) are particularly effective as defoamers due to reduced water solubility and surface-active properties.

• Handling: Use in well-ventilated areas; Wear protective gloves and safety goggles; Avoid dust generation; Clean up spills immediately (slippery).

• Personal Protective Equipment: Safety goggles, protective gloves (nitrile, neoprene), protective clothing, NIOSH-approved respirator (if mist).

• Hygiene: Wash hands thoroughly after handling; Do not eat, drink, or smoke when using.

• Storage: Store in tightly closed containers in dry conditions; Protect from moisture; Keep away from oxidizing agents and acids; Use HDPE or lined steel containers.

• Spill Response: Absorb with inert material (sand, vermiculite); Place in closed containers; Clean area with detergent and water; Do not allow to enter drains or waterways.

• Disposal: Dispose of in accordance with local, regional, and national regulations; Incineration recommended.

SPECIAL NOTE ON PPG VS PEG:

PPG differs significantly from PEG:

• Structure: PPG has methyl side groups (-CH₃) while PEG has no side groups

• Hydrophilicity: PPG is less hydrophilic and more lipophilic than PEG

• Water Solubility: PPG water solubility decreases with MW; PEG is soluble at all MW

• Surface Activity: PPG has better surfactant properties than PEG

• Physical State: PPG is liquid at room temperature for all commercial MW; High MW PEGs are solid

• Applications: PPG is preferred for polyurethanes, lubricants, defoamers; PEG for cosmetics, pharmaceuticals, food

SPECIAL NOTE ON MOLECULAR WEIGHT SELECTION:

• Low MW (400-600): Water-soluble; Used in cosmetics, lubricants, defoamers

• Medium MW (1000-2000): Partially water-soluble; Used in polyurethane elastomers, adhesives, lubricants

• High MW (2000-4000): Very low water solubility; Used in polyurethane foams, defoamers, specialty applications

SPECIAL NOTE ON POLYURETHANE APPLICATIONS:

PPG is one of the most important polyols for polyurethane production:

• Reaction: PPG hydroxyl groups react with diisocyanates to form polyurethane polymers

• Soft Segments: PPG provides the soft segments in elastomers and foams

• Properties: Contributes to flexibility, low-temperature performance, hydrolysis resistance

• Advantages: PPG-based polyurethanes are more hydrophobic and have better hydrolytic stability than PEG-based polyurethanes

LEGAL DISCLAIMER:

The information provided in this document is based on our current knowledge and experience and is presented in good faith. However, as all conditions of use are beyond our control, this document does not constitute a binding specification or warranty. This Technical Data Sheet is for informational purposes only. Users are responsible for testing suitability for their own applications. For complete safety, storage, handling, transportation, waste, and regulatory compliance information, please refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier.