质量标准
10% in H2O:
描述description non-ionic
平均分子量mol wt average mol wt 680
浓度concentration ~10% in H2O
聚合数aggregation number ~132
折光率refractive index n20/D 1.348
CMC 0.059 mM(20-25°C)
过渡温度浊点transition temp cloud point 45-50 °C
密度density 1.01 g/mL at 20 °C
cation traces Ca: ≤10 ppm
Cd: ≤5 ppm
Co: ≤50 ppm
Cr: ≤5 ppm
Cu: ≤5 ppm
Fe: ≤5 ppm
K: ≤500 ppm
Mg: ≤50 ppm
Mn: ≤5 ppm
Na: ≤500 ppm
Ni: ≤5 ppm
Pb: ≤5 ppm
Zn: ≤5 ppm
NP40, mixture of 15 homologues:
描述description non-ionic
平均分子量mol wt average mol wt 680
薄层色谱TLC corresponds to standard
折光率refractive index n20/D 1.48-1.52
pH 5-8 (5% in H2O)
CMC 0.059 mM(20-25°C)
过渡温度浊点transition temp cloud point 45-50 °C
密度density 1.05-1.07
氯离子chloride (Cl-): ≤500ppm
硫酸根离子sulfate (SO42-): ≤100ppm
Ca: ≤10 ppm
Cd: ≤5 ppm
Co: ≤5 ppm
Cr: ≤5 ppm
Cu: ≤5 ppm
Fe: ≤5 ppm
K: ≤1000 ppm
Li: ≤5 ppm
Mg: ≤5 ppm
Mn: ≤5 ppm
Mo: ≤5 ppm
Na: ≤50 ppm
Ni: ≤5 ppm
Pb: ≤5 ppm
Zn: ≤5 ppm