HSChapter 29
4-Aminoazobenzene disulfonic acid monosodium salt is an azo-compound intermediate used in the synthesis of dyes, pigments, and specialty chemicals, classified within Chapter 29 among diazo, azo, and azoxy compounds. Its azo functional group makes it a building block for reactive and direct dyes used in textile and paper coloring, and its sulfonic acid moiety enhances water solubility for aqueous dyeing processes. Importers of this compound should confirm purity specifications and CAS registry documentation, as classification within the azo-compound provisions can turn on the specific substitution pattern and salt form. This is a purely industrial chemical intermediate with no food, drug, or biological admissibility trigger.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
This compound serves primarily as a chemical intermediate in the manufacture of azo dyes and pigments, particularly reactive and direct dyes used in textile dyeing and paper coloring. Its sulfonate groups provide water solubility, making it suitable for aqueous industrial dyeing processes.
Importers should have a Safety Data Sheet (SDS), CAS number confirmation, certificate of analysis showing purity and salt form, and a clear chemical name and structural description. These documents support accurate classification within Chapter 29 and facilitate CBP review of the chemical's identity.
Trade Directory
List your company and tag the 6-digit products you trade, so the companies trading them can find you. Be the first supplier listed.
Statistical number 7 of 9 in subheading 292700
ImportsExports
Imports
—YoY · free account
12-mo low · imports
YoY · free accountFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
customs district
None recorded for this period.
destination
Census publishes state breakdowns to the 6-digit level only. See HS 292700 for those.
entry
Census publishes port breakdowns to the 6-digit level only. See HS 292700 for those.
rate provision · imports
None recorded for this period.