PROBLEM TO BE SOLVED: To provide a transparent solid soap superior in transparency without muddiness (whitening) nor blooming, hard to occur a sweating phenomenon and hard to change the shape after drying and further superior in a yield.SOLUTION: The transparent solid soap contains 2 to 20 mass% of a compound (A) represented by a formula (1) (wherein n represents an integer of 2 to 6), 30 to 80 mass% of a fatty acid salt (B), and 5 to 25 mass% of water (C).COPYRIGHT: (C)2009,JPO&INPIT【課題】濁り(白化)や粉ふきがなく透明性に優れると共に、発汗現象が起こりにくく、乾燥後の変形が小さく、歩留まりに優れた透明固形石鹸の提供。【解決手段】本発明の透明固形石鹸は、式(1)で示される化合物(A)を2~20質量%、脂肪酸塩(B)を30~80質量%、水(C)を5~25質量%含有する。【化1】(式中、nは2~6の整数を表す。)【選択図】なし