Heading · Chapter 29 · Section VI, Products of the chemical or allied industries

HS 2931Organic chemicals: other organo-inorganic compounds

Customs duty: 7.5%; 29 tariff items
GST now: 5% or 18%; depending on the goods
Import policy: Mostly Free; Restricted: 1 item
Export policy: Free
Unit: kg
Duty in China: 6.5%; On Indian goods

Search codesRates as on 19 Oct 2026

Codes under this heading

17 codes. Duty and GST are set on the 8-digit tariff items; open the one that describes your goods.

Codes under this code
Code	Description	Customs duty	GST now	Unit
2931 10	Tetramethyl lead and tetraethyl lead	7.5%	5% or 18%	kg
2931 20 00	Tributyltin compounds	7.5%	5% or 18%	kg
2931 41 00	Dimethyl methylphosphonate	7.5%	5% or 18%	kg
2931 42 00	Dimethyl propylphosphonate	7.5%	5% or 18%	kg
2931 43 00	Diethyl ethylphosphonate	7.5%	5% or 18%	kg
2931 44 00	Methylphosphonic acid	7.5%	5% or 18%	kg
2931 45 00	Salt of methylphosphonic acid and (aminoiminomethyl) urea (1: 1)	7.5%	5% or 18%	kg
2931 46 00	2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6	7.5%	5% or 18%	kg
2931 47 00	(5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan	7.5%	5% or 18%	kg
2931 48 00	3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide	7.5%	5% or 18%	kg
2931 49	Other	7.5%	5% or 18%	kg
2931 51 00	Methylphosphonic dichloride	7.5%	5% or 18%	kg
2931 52 00	Propylphosphonic dichloride	7.5%	5% or 18%	kg
2931 53 00	O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl) phenyl] methylphosphonothionate	7.5%	5% or 18%	kg
2931 54 00	Trichlorfon (ISO)	7.5%	5% or 18%	kg
2931 59 00	Other	7.5%	5% or 18%	kg
2931 90	Other	7.5%	5% or 18%	kg

Importing into India

Duty is set on each 8-digit tariff item: open one of the codes above. Basic customs duty across its 29 tariff items: 7.5%. The rules below cover this whole code.

Anti-dumping, countervailing and safeguard duty in force

Anti-dumping duty on goods from China, European Union and United States: USD 75–1,748 per tonne, by origin and producer (until 18 Jun 2031). Sulphenamides Accelerators. 11/2026-ADD
Anti-dumping duty on goods from China and South Korea: reference price USD 378.38–465.94/KG, by origin and producer (until 17 Aug 2027). Ursodeoxycholic Acid (UDCA). 04/2023-ADD

Charged on top of the duty above, only on goods from the countries named.

Import policy (DGFT ITC(HS)) of its tariff items

Free: 37 tariff items
Restricted: 1 tariff item

GST

IGST on imports is the GST rate. Rates changed on 22 September 2025.

Now 5% or 18%, depending on the goods.
Until 21 September 2025 12% or 18%, depending on the goods.
Change: Changed.

The rules that set it now

GST rate rules in force
Notification	Goods	Rate
9/2025-Integrated Tax (Rate)Schedule I, S.No. 222	Gibberellic aci d	5%
9/2025-Integrated Tax (Rate)Schedule II, S.No. 36	All organic chemicals other than giberellic acid	18%

History

GST rate history
Period	Rate	Notification
Until 21 Sep 2025	12% or 18%	1/2017-Central Tax (Rate)
From 22 Sep 2025	5% or 18%	9/2025-Integrated Tax (Rate)

Exporting from India

Export duty

Nil. The Second Schedule to the Customs Tariff Act does not list these goods, so no export duty is charged.

Duty drawback (All Industry Rates)

All Industry Rates of duty drawback under this heading
Drawback item	Goods	Rate	Cap
2931	Other organo-inorganic compounds	1.2%	—

Drawback items follow the 4-digit heading, not the 8-digit code: claim the one that describes your goods. Rates of notification 77/2023-Customs (N.T.) as amended, in force on 19 Oct 2026.

Export policy (DGFT ITC(HS) Schedule 2) of its tariff items

Free: 35 tariff items

China: the same goods (2931)

China shares the first 6 digits with India and splits them into 10-digit codes of its own: 36 in force and 105 expired under 2931. Exporters see what China charges Indian goods; importers see the rebate and licences their Chinese supplier deals with.

China's tariff for these goods
China code	Goods	Duty on Indian goods	MFN	Import VAT	Export rebate	Licences
2931.10.00.00	Tetramethyl lead and tetraethyl lead四甲基铅及四乙基铅	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	13%	ABXNM
2931.20.00.00	Tributyltin compounds三丁基锡化合物	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	X
2931.41.00.00	Dimethyl methylphosphonate甲基膦酸二甲酯	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23
2931.42.00.00	Dimethyl propylphosphonate丙基膦酸二甲酯	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	ABNMRS
2931.43.00.00	Diethyl ethylphosphonate乙基膦酸二乙酯	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23
2931.44.00.00	Methylphosphonic acid甲基膦酸	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23
2931.45.00.00	Salts of methylphosphonic acid and amidinourea甲基膦酸和脒基尿素生成的盐	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23ABNMRS
2931.46.00.00	1-Propylphosphonic anhydride1-丙基磷酸环酐	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23ABMNRS
2931.47.00.00	Dimethyl methylphosphonate甲基膦酸二甲酯	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23
2931.48.00.00	3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5,5]undecane-3,9-dioxide3,9-二甲基-2,4,8,10-四氧杂-3,9-二磷杂螺[5,5]十一烷-3,9二氧化物	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	AB23MNRS
2931.49.10.00	Bifenthrin双甘膦	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	ABRS
2931.49.90.10	Alkyl phosphonites of alkyl-2-dialkylaminoethyl, dialkylamino cyanophosphonates, alkyl C10烷基亚膦酰烷基-2-二烷氨基乙酯, 二烷氨基氰膦酸烷酯10碳原子以下	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23
2931.49.90.20	Propylphosphonic acid, polyethylene glycol bis(methylphosphonate), bis[5-methyl] methylphosphonate丙基膦酸,甲基膦酸二聚乙二醇酯,甲基膦酸二[5-甲基]酯	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23
2931.49.90.30	Glyphosate and its salts, glufosinate, glufosinate-P, anilofos, butafos, bialafos, glufosinate-ammonium, bensulide, fenthion草甘膦及其盐,草铵膦,精草铵膦,草硫膦,杀木膦,双丙氨膦,增甘膦,苯硫膦,苯腈膦	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	S
2931.49.90.90	Other non-halogenated organic phosphorus derivatives其他非卤化有机磷衍生物	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	ABNMRS
2931.51.00.00	Methylphosphonyl dichloride甲基膦酰二氯	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23
2931.52.00.00	Propylphosphonic dichloride丙基膦酰二氯	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	ABMNRS
2931.53.00.00	O-O-[4-nitro-3-phenyl] methylphosphonothioateO-O-[4-硝基-3-苯基]甲基硫代膦酸酯	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	ABMNRS
2931.54.00.00	Trichlorfon敌百虫	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	S
2931.59.00.01	Isosarin (O-isopropyl methylphosphonofluoridate); Soman (O-pinacolyl methylphosphonofluoridate); Alkyl alkylphosphonofluoridates (where the alkyl group is methyl, ethyl, n-propyl or isopropyl), up to 10 carbon atoms (e.g. Sarin, Soman); Alkylphosphonyl difluorides (where the alkyl group is methyl, ethyl, n-propyl or isopropyl) (e.g. DF: Methylphosphonyl difluoride)氯沙林(甲基氯膦酸异丙酯);氯梭曼(甲基氯膦酸频那酯);烷基氟膦酸烷酯，10碳原子以下(烷基指甲、乙、正丙、异丙基，例如沙林，梭曼);烷基膦酰二氟(烷基指甲、乙、正丙、异丙基,例如,DF:甲基膦酰二氟)	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23
2931.59.00.40	Tributylbenzylammonium chloride, Ethephon, Cyfluthrin, Fosthietan, Bromophos, Butamifos三丁氯苄鏻,乙烯利,氟硅菊酯,毒壤膦,溴苯膦,丁酯膦	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	S
2931.59.00.50	N-{1-[dialkylamino]alkylidene}-P-alkylfluorophosphonamidates and their alkylated or protonated saltsN-{1-[二烷基胺基]亚烷基}-P-烷基氟膦酰胺和相应的烷基化盐或质子化盐	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23
2931.59.00.60	[Bis(methylene)]fluoromethylphosphonamide[双亚甲基]甲氟膦酰胺	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23
2931.59.00.70	Fonofos毒壤膦	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23S
2931.59.00.80	Salts and related compounds of perfluorooctanoic acid全氟辛酸的盐类和相关化合物	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	13%	XABMNRS
2931.59.00.90	Other halogenated organic derivatives of phosphorus其他卤化有机磷衍生物	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	ABMNRS
2931.90.00.01	Hexamethylcyclotrisiloxane六甲基环三硅氧烷	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	13%	None
2931.90.00.02	2-chlorovinyldichloroarsine, bis(2-chlorovinyl)chloroarsine, tris(2-chlorovinyl)arsine2-氯乙烯基二氯胂、二(2-氯乙烯基)氯胂、三(2-氯乙烯基)胂	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	23
2931.90.00.03	Fentin, fentin acetate, fentin chloride, fentin hydroxide, fenbutatin oxide, cyhexatin, azocyclotin, silatrane三苯锡,三苯基乙酸锡,三苯基氯化锡,三苯基氢氧化锡,苯丁锡,三唑锡,田安,乙烯硅	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	9%	S
2931.90.00.17	Including triethyltin sulfate, dibutyltin oxide硫酸三乙基锡,二丁基氧化锡等	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	13%	None
2931.90.00.32	Trimethylantimony, triethylantimony and other organo-antimony compounds, of a purity (on an inorganic element basis) exceeding 99.999%三甲基锑、三乙基锑及其他有机锑化合物,纯度(无机元素基准)大于99.999%	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	13%	3ABMNRS
2931.90.00.40	Salts and related compounds of perfluorooctanoic acid全氟辛酸的盐类和相关化合物	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	13%	XABMNRS
2931.90.00.51	Zirconium reagent, cacodylic acid, sodium cacodylate, 4-dimethylaminoazobenzene-4'-arsonic acid, sodium 4-aminophenylarsonate, phenyldichloroarsine, anthraquinone-1-arsonic acid, cyhexatin, tributyltin laurate, tributyltin acetate锆试剂,二甲胂酸,4-二甲氨基偶氮苯-4'-胂酸,卡可基酸,二甲基胂酸钠,4-氨基苯胂酸钠,二氯化苯胂,对氨基苯胂酸钠,二氯苯胂,苯胂化二氯,蒽醌-1-胂酸、三环锡(普特丹),月桂酸三丁基锡、醋酸三丁基锡	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	None
2931.90.00.52	Tetraethyltin, trimethyltin acetate, tetraethyltin, trimethyltin acetate, fentin, triphenyltin hydroxide (content >20%), copper acetoarsenite, diphenylaminechloroarsine, emerald green, emerald green, copper acetoarsenite, phenarsazine chloride, adamsite, 3-nitro-4-hydroxybenzenearsonic acid, 4-hydroxy-3-nitrobenzenearsonic acid, ethyldichloroarsine, diphenylchloroarsine四乙基锡,乙酸三甲基锡,四乙锡,醋酸三甲基锡,毒菌锡,三苯基羟基锡(含量>20%),乙酰亚砷酸铜,二苯(基)胺氯胂,祖母绿,翡翠绿,醋酸亚砷酸铜,吩吡嗪化氯,亚当氏气,3-硝基-4-羟基苯胂酸,4-羟基-3-硝基苯胂酸,乙基二氯胂,二苯(基)氯胂	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	None
2931.90.00.53	Methylarsonic acid, propylarsonic acid, phenyldiiodoarsine, benzenearsonic acid, 2-nitrobenzenearsonic acid, o-nitrobenzenearsonic acid, 3-nitrobenzenearsonic acid, m-nitrobenzenearsonic acid, 4-nitrobenzenearsonic acid, 2-aminobenzenearsonic acid, p-nitrobenzenearsonic acid, o-aminobenzenearsonic acid, 3-aminobenzenearsonic acid, 4-aminobenzenearsonic acid, m-aminobenzenearsonic acid, p-aminobenzenearsonic acid甲(基)胂酸,丙(基)胂酸,二碘化苯胂(苯基二碘胂),苯胂酸,2-硝基苯胂酸,邻硝基苯胂酸,3-硝基苯胂酸,间硝基苯胂酸,4-硝基苯胂酸,2-氨基苯胂酸,对硝基苯胂酸,邻氨基苯胂酸,3-氨基苯胂酸,4-氨基苯胂酸,间氨基苯胂酸,对氨基苯胂酸	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	0%	None
2931.90.00.90	Other organo-inorganic compounds其他有机-无机化合物	6.5%MFN rate (no APTA concession on this line)	6.5%	13%	13%	ABNMRS

India is a member of the Asia-Pacific Trade Agreement (APTA). With an APTA certificate of origin, Indian goods pay China's APTA rate where the line has one; China applies the lower of that and its provisional rate.
The export VAT rebate is what China refunds its own exporters. When China cuts it, Chinese export prices tend to rise.

China's tariff as compiled by HS编码网 from China Customs, the State Council Tariff Commission and the State Taxation Administration. The Chinese is the original.

Nearby codes

Previous2930Organo-sulphur compounds One level upChapter 29Organic chemicals Next2932Heterocyclic compounds with oxygen hetero-atom (s) only

Sources

GSTN HSN code masterChecked 13 Oct 2026
DGFT ITC(HS) import and export policyChecked 9 Oct 2026
GST rate per HSN (archived GSTZen extract)Checked 29 Sep 2026
Customs Tariff of India (First Schedule): sections, chapters, notes and statutory BCDChecked 19 Oct 2026
GST rates on goods, before and after 22 September 2025Checked 18 Oct 2026
BIS compulsory certification: products and Quality Control OrdersChecked 18 Oct 2026
Anti-dumping, countervailing and safeguard duties in force (India)Checked 19 Oct 2026
India's export duty (Second Schedule to the Customs Tariff Act and notifications 27/2011, 55/2022, 22/2024)Checked 18 Oct 2026
India's All Industry Rates of duty drawback (notification 77/2023-Customs (N.T.))Checked 19 Oct 2026
China customs tariff (HS编码网)Checked 19 Oct 2026

For information, not a customs ruling. Only notifications published in the Gazette have legal force; confirm the duty with your customs broker or ICEGATE before you price a deal.