Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Chemical Name
- Base Chemicals Functions
- Technologies
- Product Families
- Structual Formula
Poly(Tetramethylene Ether) Glycol
Features & Benefits
- Base Chemicals Features
- Product Highlights
PTMG 650 shows the following outstanding characteristics as a soft segment of polyurethane and polyester resins. The resins obtained are used over a broad range of applications, from common consumer goods such as garments, to the industrial materials such as machine parts. Applications are expected to continue to grow.
- Impact resilience
- Hydrolysis resistances
- Low temperature flexibility
- Wear resistance
- Tear resistance
- Fungus resistance
Applications & Uses
Properties
- Physical Form
- Appearance
- Colorless transparent liquid, Solid white wax Colorless transparent liquid when melted
- Typical Properties
Value Units Test Method / Conditions Freezing Point 11 °C - Flash point 237 °C - Specific Gravity (at 40/4°C) 0.982 - - Viscosity (at 40°C) 160 mPa.s - - Specifications
Value Units Test Method / Conditions Average Molecular Weight (Mn)* 600 - 700 - Calculated by using hydroxyl value Color max. 40 Hazen Similar to JIS K 1557 and JIS K 0071-1 Hydroxyl Value 166 - 180 mgKOH/g Substantially similar to JIS K 1557 Water Content max. 150 ppm Substantially similar to JIS K 1557 Acid Value max. 0.05 mgKOH/g Substantially similar to JIS K 0070 Volatile Matter max. 0.1 wt% MCC Method (Total amount of water) , Volatile Gas Chromatography Butylated Hydroxytoluene Content (as antioxidant) 150 - 250 ppm - - Note
* - Mn = 112.2 × 1000 / OHV
Regulatory & Compliance
- Quality Standards
Packaging & Availability
Storage & Handling
- Storage and Handling Conditions
- PTMG 650 is hygroscopic and will degrade if exposed to oxygen or air, so it should be well-sealed with dry nitrogen.
- PTMG 650 is a white, waxy sold at room temperature, but will become a clear, colorless liquid upon heating.
- If it has solidified in the drum, it can be melted by holding the drum at about 70°C for 24 hours.
- Avoid localized heating however.
- For storage in the liquid state, it is recommended to maintain temperature at less than 50°C.
- Volatility is low, and it is unlikely to catch fire at room temperature.
- But if it is burning, extinguish the fire with dry chemical, alcohol-resistant foam, or large quantities of water.
- Although PTMG 650 has relatively low toxicity and is relatively safe, use standard protective equipment such as goggles and gloves when handling it.