2931.49: Other organo-inorganic compounds, non-halogenated organo-phosphorous derivatives, other

1. 2931 49 00 00 Other
2. 2931 49 10 00 Sodium 3-(trihydroxysilyl)propyl methylphosphonate 6%
3. 2931 49 20 00 Bis[(5-ethyl-2-methyl-2-oxido-1.3,2-dioxaphosphinan-5-yl)methyl] methylphosphonate 6%
4. 2931 49 30 00 Etidronic acid (inn) (1-hydroxyethane-1.1-diphosphonic acid) and its salts Free
5. 2931 49 40 00 (nitrilotrimethanediyl)tris(phosphonic acid), {ethane-1.2-diylbis[nitrilobis(methylene)]}tetrakis(phosphonic acid), [(bis{2-[bis(phosphonomethyl)amino]ethyl}amino)methyl]phosphonic acid, {hexane-1.6-diylbis[nitrilobis(methylene)]}tetrakis(phosphonic acid), {[(2-hydroxyethyl)imino]bis(methylene)}bis(phosphonic acid), and [(bis{6-[bis(phosphonomethyl)amino]hexyl}amino)methyl]phosphonic acid; salts thereof 6%
6. 2931 49 50 00 Bis(1-methylpentyl) methylphosphonate 6%
7. 2931 49 60 00 Butyl methylphosphinate 6%
8. 2931 49 80 00 Other
9. 2931 49 80 08 Sodium diisobutyldithiophosphinate (cas rn 13360-78-6) in an aqueous solution 6%
10. 2931 49 80 10 Triethyl phosphonoacetate (cas rn 867-13-0) with a purity by weight of 98% or more 6%
11. 2931 49 80 13 Trioctylphosphine oxide (cas rn 78-50-2) 6%
12. 2931 49 80 20 Tetrabutylphosphonium acetate (cas rn 30345-49-4) in the form of an aqueous solution, containing by weight 40% or more but not more than 50% of tetrabutylphosphonium acetate 6%
13. 2931 49 80 25 (z)-prop-1-en-1-ylphosphonic acid (cas rn 25383-06-6) 6%
14. 2931 49 80 35 Ethyl phenyl(2.4,6-trimethylbenzoyl)phosphinate (cas rn 84434-11-7) 6%
15. 2931 49 80 38 N-(phosphonomethyl)iminodiacetic acid (cas rn 5994-61-6) containing by weight not more than 15% of water, and with a dry weight purity of 97% or more 6%
16. 2931 49 80 40 Tetrakis(hydroxymethyl)phosphonium chloride (cas rn 124-64-1) 6%
17. 2931 49 80 55 3-(hydroxyphenylphosphinoyl)propionic acid (cas rn 14657-64-8) 6%
18. 2931 49 80 60 2-phosphonobutane-1.2,4-tricarboxylic acid (cas rn 37971-36-1) and its sodium salt tetrasodium hydrogen 2-phosphonatobutane-1.2,4-tricarboxylate (cas rn 66669-53-2), in solid form or in an aqueous solution 6%
19. 2931 49 80 90 Other Free

Additional duties and import rules

Charges on top of the customs duty, and rules the goods must meet at the border.

Preferential rates by country

UK: imports by month

last 12 months£18.9m+10.4% · previous 12 months

Average import price£1.90 per kg

Main suppliers, last 12 months

Country	Value	Share	Change
China	£13.7m	72.7%	+14.3%
Germany	£2.7m	14.4%	+5.3%
Italy	£789k	4.2%	-30.3%
Switzerland	£319k	1.7%	+1,111%
United Kingdom	£227k	1.2%	+59.1%
United States	£206k	1.1%	-53.8%
India	£201k	1.1%	-1.8%
Sri Lanka	£173k	0.9%	—

Same subheading in other tariffs

EU 6.5% Third-country duty 7 tariff lines Türkiye 6.5% Third-country duty 15 tariff lines USA 3.7% General (MFN) 1 tariff line

World trade in 2024

Top exporters

Rank	Country	Value	Share
1	China	US$2bn	57.2%
2	United States	US$607m	18.2%
3	Germany	US$150m	4.5%
4	Belgium	US$118m	3.5%
5	Netherlands	US$100m	3%
6	India	US$77m	2.3%
7	Canada	US$65m	2%
8	United Kingdom	US$58m	1.7%
9	Ireland	US$52m	1.6%
10	Switzerland	US$42m	1.3%

Top importers

Rank	Country	Value	Share
1	United States	US$657m	19.7%
2	Argentina	US$456m	13.7%
3	Brazil	US$435m	13.1%
4	Belgium	US$236m	7.1%
5	Indonesia	US$136m	4.1%
6	Russia	US$111m	3.3%
7	Spain	US$108m	3.3%
8	Malaysia	US$93m	2.8%
9	Japan	US$87m	2.6%
10	Italy	US$79m	2.4%

Binding rulings for similar goods 1

Code history

Since 2022; before, these goods were classified under 2931.34, 2931.37, 2931.39.

Questions and answers