Diphenylguanidine (DPG) Rubber Accelerator DPG
Commercial-grade N,N'-Diphenylguanidine (DPG) specifically packaged for rubber industry use falls under HTS 2925.29.18.00 as the enumerated compound. Purity typically 95-99% with stabilizers permitted by chapter notes. Essential delayed-action accelerator for NR and SR vulcanization.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when supplied with rubber compounding additives
Rubber accelerators in compounded form for direct addition classify as prepared rubber additives.
If for non-aromatic guanidine analogs
Aliphatic imine derivatives fall under separate subheading.
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Import Tips & Compliance
• Include vulcanization accelerator specification sheets showing DPG content >90%
• Provide stabilizer analysis confirming chapter note (f) compliance (preservation/transport only)
• Declare commercial grade vs. technical grade to avoid reclassification as mixtures
Related Products under HTS 2925.29.18.00
N,N'-Diphenylguanidine
N,N'-Diphenylguanidine is an aromatic imine-function compound specifically enumerated under HTS 2925.29.18.00, used primarily as an accelerator in rubber vulcanization processes. Its chemical structure features the guanidine moiety with phenyl substituents, qualifying it as a derivative of imines in this tariff subheading.
3-Dimethylaminomethyleneiminophenol Hydrochloride
This hydrochloride salt of an aromatic imine derivative is explicitly listed in HTS 2925.29.18.00 due to its imine-function structure. Used in organic synthesis and as an intermediate for dyes and pharmaceuticals. The phenolic and imine moieties classify it within aromatic imines of this subheading.
1,3-Di-o-tolylguanidine
1,3-Di-o-tolylguanidine, an aromatic guanidine derivative with o-tolyl substituents, is specifically named in HTS 2925.29.18.00. Primarily serves as a rubber accelerator and curing agent in industrial applications. Its imine-function classification places it among enumerated aromatic compounds.
N,N-Dimethyl-N'-[3-[[(methylamino)carbonyl]oxy]phenyl]methanimidamide Monohydrochloride
This complex aromatic imine hydrochloride with carbamate functionality is one of four compounds explicitly listed under HTS 2925.29.18.00. Used as a pesticide intermediate (related to carbanolate structures). The imine-function group determines its classification despite additional functional groups.
OTG 1,3-Di-o-Tolylguanidine Accelerator
OTG (1,3-Di-o-tolylguanidine) is the commercial designation for this HTS 2925.29.18.00 enumerated compound used in low-temperature rubber curing. Offers superior solubility compared to DPG in synthetic rubber compounds. Aromatic imine structure confirmed by standard analytical methods.