Pluronic 25R4
Typical physical properties
Form………………………………………………………………………….…...Liquid
Average molecular weight………………………………………….…………..3600
Specific gravity, 25°C/25°C…………………………………………….………1.048
Viscosity, cps at 25°C…………………………………………………………..1110
Pour point………………………………………………………………….……..25°C
Cloud point (1% aqueous)……………………………………………………...40°C
Foam height (Ross Miles, 0.1% aqueous at 50°C)…………………………..25 mm
Surface tension (0.1% aqueous)……………………………………………....41 dynes/cm at 25°C
HLB………………………………………………………………………….…….7 − 12
Solubility in water at 25°C……………………………………………………....>10%
Wetting, Draves Sink Time(3-gm hook, 0.1% aqueous at 25°C)………..….100 seconds
產品規格︰
Pluronic 25R4 Specifications
Cloud point (1% aqueous)……..…..… 38 − 42°C
Color, APHA………………………..………… 80 max.
Water, weight %…………………………… 0.2 max.
pH (2.5% aqueous)………………….…… 5.5 − 6.7
產品優點︰ Pluronic 25R4 is a difunctional block copolymer surfactant with terminal secondary hydroxyl groups. A nonionic surfactant that is 100% active and relatively nontoxic.
