| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject pumpable, nearly colorless, clear and low- viscosity composition stable at a relatively low temperature and useful as a surfactant, etc., such as a washing agent. SOLUTION: This composition satisfies respective relational expressions of respective components of betaine/water/ethanol defined by 52%<=B*<=57%, E*>=21%, W*>=20% and W*/W*+E*<=54% B*=[betaine/(betaine + water + ethanol)].102; W*=[water/(betaine + water + ethanol)].102 and E*=[ethanol/(betaine + water + ethanol)].102 [the betaine means the betaine = dry weight - NaCl]} when the salt content is <=6 wt.% in the pumpable, nearly colorless and clear composition containing an alkylamidopropylbteaine represented by the formula (R is an alkyl radical of a fraction of a fatty acid of a hydrogenated coconut or palm kernel oil having <=1 iodine value), a salt and ethanol, stable at temperatures of 5-50 deg.C and having <=1,000 Pa.s viscosity.
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