TETRASODIUM ETIDRONATE (CAS NO 3794-83-0) IN THE FORM OF A POWDER. THE CHEMICAL IS PRODUCED BY REACTION AND HYDROLYSIS OF PHOSHOROUS TRICHLORIDE IN AQUEOUS ACETIC ACID AT ELEVATED TEMPERATURE. SUBSEQUENT NEUTRALISATION WITH CAUSTIC SODA OF THE ACIDIC MIXTURE AFFORDS AFTER SPRAY DRYING, A WHITE FREE FLOWING CRYSTALLINE POWDER. THE CHEMICAL HAS PURITY OF ABOVE 85% WITH THE BALANCE BEING INSEPARABLE IMPURITIES FROM THE MANUFACTURING PROCESS AND MOISTURE. THE IMPURITIES HAVE NO UTILITY VALUE IN THE FINAL USE OF THE CHEMICAL. THE CHEMICAL IS SUITED FOR PERSONAL CARE AND COSMETIC APPLICATIONS.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR)S GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 2931 - OTHER ORGANO-INORGANIC COMPOUNDS GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 293139 - OTHER CN CODE 29313950 FOR Etidronic acid (INN) (1-hydroxyethane-1,1-diphosphonic acid) and its salts ALSO CLASSIFIED IN ACCORDANCE WITH: CHAPTER 29, GENERAL CHAPTER NOTES 1 (A) AND 1(D) HSEN NOTE (8) TO HEADING 2931