Azelaic Acid Dimethyl Ester
Dimethyl azelate, the dimethyl ester of azelaic acid, serves as a chemical intermediate for polymer synthesis and corrosion inhibitors. It qualifies for HTS 2917.13.00.90 as an 'other' ester of acyclic polycarboxylic acids (azelaic/sebacic), being a separate chemically defined compound per Chapter 29 note (a).
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If adipic acid esters
Similar diester functionality but different parent acid; adipic acid esters specifically provided for in preceding subheading.
If technical grade with impurities
If purity <95% or contains unreacted acids, classified as chemical mixtures rather than pure compounds.
If alcohol component classification
Per note 5(A), esters classified with acid-function compound occurring last; azelaic acid (2917) supersedes alcohol (2905).
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Import Tips & Compliance
• Submit NMR spectrum verifying azelate ester structure; impurities >2% may trigger 'mixture' reclassification
• Declare CAS number 627-93-0 explicitly on commercial invoice for CBP verification
• For drum quantities, ensure UN-approved packaging with proper sebacic/azelaic ester hazard labeling
Related Products under HTS 2917.13.00.90
Dioctyl Sebacate (DOS)
Dioctyl sebacate is the di(2-ethylhexyl) ester of sebacic acid, a clear, oily liquid used primarily as a plasticizer in PVC for flexible films and coatings. It falls under HTS 2917.13.00.90 as an ester of sebacic acid, classified as 'other' acyclic polycarboxylic acid esters not specifically enumerated elsewhere in the subheading.
Dibutyl Sebacate (DBS)
Dibutyl sebacate is a sebacic acid diester used as a plasticizer in cellulosic resins, nitrocellulose lacquers, and cosmetics. Classified under HTS 2917.13.00.90 as an 'other' ester of sebacic acid, their salts and esters, meeting Chapter 29 requirements for separate chemically defined organic compounds.
Sebacic Acid Monomethyl Ester
Monomethyl sebacate is a half-ester of sebacic acid used in specialty polyester synthesis and pharmaceutical intermediates. Falls under HTS 2917.13.00.90 as an 'other' sebacic acid derivative, qualifying as a chemically defined acyclic polycarboxylic acid ester.
Dipropyl Azelate
Dipropyl azelate, the dipropyl ester of azelaic acid (nonanedioic acid), functions as a plasticizer and solvent in coatings. Classified in HTS 2917.13.00.90 as an 'other' azelaic acid ester, meeting Chapter 29 criteria for separate chemically defined compounds without excluded additives.
Bis(2-butoxyethyl) Sebacate
Bis(2-butoxyethyl) sebacate serves as a high-performance plasticizer for nitrocellulose and polyvinyl butyral applications. HTS 2917.13.00.90 applies as a sebacic acid ester, chemically defined without excluded Chapter 29 additives like anti-dusting agents rendering it preparation-specific.
Sebacic Acid Diisopropyl Ester
Diisopropyl sebacate functions as a emollient in cosmetics and personal care formulations. Qualifies for HTS 2917.13.00.90 as a pure sebacic acid diester, separate chemically defined compound per Chapter 29 scope, not excluded as cosmetic preparation.