Heading 2918 · Section VI
2918 Acids; carboxylic acid with additional oxygen function and their anhydrides, halides, peroxides, peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives
Subheadings 16
2918.11 Carboxylic acids, (with alcohol function but without other oxygen function), lactic acid, its salts and esters 2918.12 Carboxylic acids, (with alcohol function but without other oxygen function), tartaric acid 2918.13 Carboxylic acids, (with alcohol function but without other oxygen function); salts and esters of tartaric acid 2918.14 Carboxylic acids, (with alcohol function but without other oxygen function), citric acid 2918.15 Carboxylic acids, (with alcohol function but without other oxygen function), salts and esters of citric acid 2918.16 Carboxylic acids, (with alcohol function but without other oxygen function), gluconic acid, its salts and esters 2918.17 Carboxylic acids, (with alcohol function but without other oxygen function), 2,2-Diphenyl-2-hydroxyacetic acid (benzilic acid) 2918.18 Carboxylic acids, (with alcohol function but without other oxygen function), chlorobenzilate (ISO) 2918.19 Carboxylic acids, (with alcohol function but without other oxygen function), other than lactic, tartaric, citric, and gluconic acids and their salts and esters 2918.21 Carboxylic acids, (with phenol function but without other oxygen function), salicylic acid and its salts 2918.22 Carboxylic acids, (with phenol function but without other oxygen function), o-acetylsalicylic acid, its salts and esters 2918.23 Carboxylic acids, (with phenol function but without other oxygen function), other esters of salicylic acid and its salts n.e.c. in item no. 2918.2 2918.29 Carboxylic acids, (with phenol function but without other oxygen function), their anhydrides, halides, peroxides, peroxyacids and their derivatives, n.e.c. in item no. 2918.2 2918.30 Carboxylic acids, (with aldehyde or ketone function but without other oxygen function), their anhydrides, halides, peroxides, peroxyacids and their derivatives 2918.91 Carboxylic acids, with additional oxygen function (not alcohol, phenol, aldehyde or ketone) and their anhydrides, halides, peroxides and peroxyacids; 2,4,5-T (ISO) (2,4,5-trichlorophenoxyacetic acid), its salts and esters 2918.99 Carboxylic acids, with additional oxygen function (not alcohol, phenol, aldehyde or ketone) and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives; other than 2,4,5-T (ISO)
For Indian shipping bills you need 8 digits. These six-digit codes are the international HS 2022. India's ITC(HS) classification (DGFT) and Customs Tariff (CBIC) add two more digits for the national tariff line, so pick the 8-digit line under your 6-digit code there, and confirm with your customs broker for anything borderline.