ISO 4629-2:2016规定了一种滴定法，用于测定树脂、色漆和清漆粘合剂、伯醇、二醇和脂肪的羟基值。是否适用于氢酸、酚羟基、多元醇（如三甲基丙烷）和含有芳香基团的物质已被激活进行弗里德尔-克拉夫茨酰化，应根据具体情况决定。 在合适的条件下，该方法也适用于测定蓖麻油及其衍生物的羟值。

ISO 4629-2:2016 specifies a titrimetric method for determining the hydroxyl value of resins, binders for paints and varnishes, primary alcohols, glycols and fats. Whether it can be applied for hydro carboxylic acids, phenolic hydroxyl groups, polyols such as trimethyl propane and substances containing aromatic groups have been activated for Friedel-Crafts acylation shall be decided on case-to-case basis. Under the right conditions, the method is also applicable for determining the hydroxyl value of castor oil and its derivatives.