POLYTETRAMETHYLENE ETHER GLYCOL
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Category：Paint chemicals Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
Poly(tetramethylene ether)glycol is a product obtained from the polymerization reaction catalyzed by THF under acid catalyst, and it is a chained bisol with tetramethylene ether repeating connection.
Names and Identifiers
| Name | terathane(R) 1400 |
| Synonyms | PTMG b2000 PTMEG polifurit hiprenemc532 Terathane 1400 terathane(R) 1400 poly(butyleneoxide) Poly(tetrahydrofuran) (2S)-2-butoxybutan-1-ol glycols,polytetramethylene poly(oxy-1,4-butylene)glycol alpha-hydro-omega-hydroxy-poly(oxy-4-butanediyl) terathane 2000 polyether glycol (poly-tetrahydrof 4-butanediyl),.alpha.-hydro-.omega.-hydroxy-poly(oxy-1 |
| CAS | 25190-06-1 |
| EINECS | 607-637-9 |
| InChI | InChI=1/C8H18O2/c1-3-5-6-10-8(4-2)7-9/h8-9H,3-7H2,1-2H3/t8-/m0/s1 |
25190-06-1 – Physico-chemical Properties
| Molecular Formula | C16H33O5X2 |
| Molar Mass | 305.43 |
| Density | 1g/mLat 25°C |
| Melting Point | 33-36°C |
| Boling Point | 195.7°C at 760 mmHg |
| Flash Point | >230°F |
| Vapor Presure | <0.01 mm Hg ( 25 °C) |
| Specific Gravity | 0.961 |
| PH | 7 (H2O, 20℃)Aqueous solution |
| Storage Condition | Store below +30°C. |
| Refractive Index | n20/D 1.465 |
| Physical and Chemical Properties | Polytetrahydrofuran is a white waxy solid that dissolves readily in alcohols, esters, ketones, aromatic hydrocarbons, and chlorinated hydrocarbons, and is insoluble in ester hydrocarbons and water, and becomes a transparent liquid when the temperature exceeds room temperature. |
25190-06-1 – Risk and Safety
| Hazard Symbols | Xi – Irritant |
| Risk Codes | 36/37/38 – Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 – Wear suitable protective clothing. |
| WGK Germany | 1 |
| RTECS | MD0916000 |
| HS Code | 3907 20 20 |
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg |
POLYTETRAMETHYLENE ETHER GLYCOL (PTMEG): TECHNICAL DATA SHEET
| Category | Specifications |
|---|---|
| Chemical Name | Polytetramethylene Ether Glycol |
| CAS No. | 25190-06-1 |
| Molecular Formula | HO-(CH₂CH₂CH₂CH₂O)ₙ-H |
| Appearance | Colorless to pale yellow viscous liquid |
| Molecular Weight | 650-3000 g/mol (customizable) |
| Hydroxyl Value | 28-112 mg KOH/g |
| Viscosity (40°C) | 50-3000 mPa·s |
Key Properties
| Property | Performance Data |
|---|---|
| Thermal Stability | Stable up to 200°C |
| Hydrolysis Resistance | Excellent (pH 4-9) |
| Low-Temperature Flexibility | Retains elasticity below -50°C |
| Compatibility | Soluble in polar solvents (e.g., THF, DMF) |
Applications
| Industry | Primary Uses |
|---|---|
| Spandex Fibers | Lycra, elastane production |
| Polyurethanes | TPU for footwear, automotive parts |
| Coatings | High-performance elastomeric coatings |
| Adhesives | Flexible sealants |
Safety & Handling
| Parameter | Requirements |
|---|---|
| Flash Point | >200°C |
| GHS Classification | Non-hazardous |
| Storage | Sealed, dry, 10-30°C |
| Shelf Life | 24 months |
References:
- Polyurethane Handbook (2nd Ed.) – G. Oertel
- ASTM D4274 – Polyol Hydroxyl Number
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