… ferrous sulphate or natural iron oxide. Finely divided powder, usually red but sometimes violet, yellowish or black … It also serves for preparing thermite (mixed with aluminium powder), and for purifying coal gas, etc. (B) IRON …
… Sub-Chapter I PRIMARY MATERIALS; PRODUCTS IN GRANULAR OR POWDER FORM GENERAL The sub‑Chapter covers : (1) The primary … of 99.94 % (headings 72.01 to 72.04). (2) Granules and powders, of pig iron, spiegeleisen, iron or steel (heading …
… by agglomerating pieces of natural stone or crushed or powdered natural stone (limestone, marble, granite, … for insulating purposes are also made by adding a metallic powder to the mixture, so that gases are given off; such …
… . (a) Oxides and hydroxides . Ceric oxide, a white powder insoluble in water, is obtained from cerium nitrate; … or orange ceric salts. Cerium oxalate appears as a powder or in yellowish‑white hydrated crystals, practically …
… : (a) Raw vegetable materials, whether dried, shredded, powdered or not, of a kind used primarily in the production … are generally in the form of white or yellowish amorphous powders which turn brown on exposure to air. They may …
… described below, or from ammonium alum. It is a light white powder, insoluble in water, specific gravity about 3.7. Uses … 76). The dry hydroxide is an amorphous, friable white powder, insoluble in water; when damp it is in gelatinous …
… covers the endosperm, the germs, the whole seeds, and also powdered germs, whether or not mixed with powdered tegument. The heading excludes locust …
