Import Administration
1-Hydroxyethylidene-1, 1-Diphosphonic Acid (Hedp) from People's Republic Of China (A-570-934)

Scope Description:

The merchandise covered by this order includes all grades
of aqueous, acidic (non-neutralized) concentrations of 1-
hydroxyethylidene-1, 1-diphosphonic acid\2\, also referred to as
hydroxethlylidenediphosphonic acid, hydroxyethanediphosphonic acid,
acetodiphosphonic acid, and etidronic acid. The CAS (Chemical Abstract
Service) registry number for HEDP is 2809-21-4. The merchandise subject
to this order is currently classified in the Harmonized Tariff
Schedule of the United States (``HTSUS'') at subheading 2931.00.9043.
It may also enter under HTSUS subheading 2811.19.6090. While HTSUS
subheadings are provided for convenience and customs purposes, the
written description of the scope of this proceeding is dispositive.