A POWDER USED TO PRODUCE DENTAL MOULDS USING THE LOST WAX PROCESS FOR THE PRODUCTION OF DENTAL CROWNS. THE POWDER CONTAINS SILICON DIOXIDE (QUARTZ POWDER), CRYSTALLINE SILICA - CRISTOBALITE, MAGNESIUM OXIDE AND AMMONIUM PHOSPHATE AND IS MIXED WITH A LIQUID TO PRODUCE A MOULD OF A DENTAL CROWN MADE OF WAX. THE WAX IS THEN BURNT OUT LEAVING A CAVITY, WHICH IS THEN FILLED WITH HEATED, PLIABLE PORCELAIN WHICH IS FORCED INTO THE MOULD UNDER A VACUUM TO PRODUCE A FINISHED DENTAL CROWN.

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 3816 REFRACTORY CEMENTS, MORTARS, CONCRETES AND SIMILAR COMPOSITIONS, OTHER THAN PRODUCTS OF HEADING 3801. TARIC CODE 3816000000 REFRACTORY CEMENTS, MORTARS, CONCRETES AND SIMILAR COMPOSITIONS, OTHER THAN PRODUCTS OF HEADING 3801. ALSO CLASSIFIED IN ACCORDANCE WITH:- SECTION VI NOTE 3. HSEN TO HEADING 3816.