PTMG 650

CAS Number: 25190-06-1
Chemical Name: Polytetramethylene Ether Glycol
Chemical Family: Glycol Ethers, Glycols, PolyolsGlycol EthersGlycolsPolyols

PTMG 650 is a member of the glycol ether chemical family, is identified as Polytetrahydrofuran. It is available in drums, tanks, and cans, providing flexibility in packaging and storage. PTMG 650 is characterized by its hygroscopic nature and solid physical form.

Properties

Physical Form: Liquid
Solid

Product families

Applications

Consumer Goods — Apparel

Industrial — Chemical & Industrial Manufacturing

Resin Manufacturing

Product Families

Base Chemicals & Intermediates — Monomers & Oligomers

Diols & Polyols

Other characteristics

Brand: PTMG
Synonyms: Polyfurite, Polytetrahydrofuran, Poly(butylene oxide), Poly(n-butylene oxide), Poly(oxy-1,4-butanediyl), Poly(oxy-1,4-butanediyl), α-hydro-ω-hydroxy-, Poly(oxy-1,4-butylene) glycol, Poly(oxybutylene) glycol, Poly(oxytetramethylene), Poly(oxytetramethylene) glycol, Poly(oxytetramethylene)diol, Poly(tetrahydrofuran), SRU, Poly(tetrahydrofurandiol), Poly(tetramethylene ether), Poly(tetramethylene ether) glycol, Poly(tetramethylene ether)diol, Poly(tetramethylene glycol), Poly(tetramethylene oxide), Poly(tetramethylene oxide) glycol, Polybutylene glycol, Polyfurit, Polytetramethylene glycol, Polytetramethylene glycol ether with butanediol, Polytetramethylene oxide diol
Hydroxyl Value: 166.0 - 180.0 mg KOH/g
Note: * - Mn = 112.2 × 1000 / OHV
Markets: Consumer Goods
Industrial
Appearance: Colorless transparent liquid, Solid white wax Colorless transparent liquid when melted
Technology: Base Chemicals & Intermediates
Packaging Type: Cans
Drums
Quality Standards: In Preview
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
Packaging Information: Drum
180kg
Oilcan
15kg
Base Chemicals End Uses: Adhesives
Artificial Leather
Coatings
Paints
Polyester Resins
Polyurethane Resins
Sealants
Synthetic Leather
Chemical Base: Good Low Temperature Flexibility
Hygroscopic
Wear Resistance
Base Chemicals Functions: Monomer
Storage Condition: 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.

Technical data

Table 1 of 2

4 rows

Characteristic	Value	Unit
Freezing Point	11	°C
Flash point	237	°C
Specific Gravity (at 40/4°C)	0.982	—
Viscosity (at 40°C)	160	mPa.s

Table 2 of 2

7 rows

Characteristic	Value	Unit	Method
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	—