| |_______________________________________________________________________| | | | _Ethereal Solution_ evaporated leaves paraffin. | |_______________________________________________________________________| | | | _Aqueous Solution_-- | | Add bromide, acidify with HCl, separate any resin and precipitate, | | filtrate with BaCl_{2} BaSO_{4} x .1373 = Sulphur. | |_______________________________________________________________________| | | | _Residue_-- | | Dry, weigh, and exhaust with water preferably in Soxhlet. | |_______________________________________________________________________| | | | | _Solution_-- | _Residue_-- | | Contains metallic | Dry, weigh, and agitate an aliquot part with | | nitrates, chlorates, | with H_{2}SO_{4} and Hg in nitrometer. If | | soluble carbonates, | nitro-cellulose is present, treat remainder of | | the sum of which | residue with ether-alcohol. | | (except AmCO_{3}) |________________________________________________| | can be determined by | | | evaporating down at | _Solution_-- | | 100 deg. C. to dryness | Evaporate and weigh. Residue consists of | | and weighing. | soluble nitro-cellulose. | | Nitrates can be |________________________________________________| | determined by | | | | _Residue_-- | | | Dry and weigh and determine hexa-nitro- | | | cellulose in nitrometer, if present. Exhaust | | | remainder with acetic ether. | | |________________________________________________| | | | | | | _Solution_-- | _Residue_-- | | | Hexa-nitro-cellulose | Dry and weigh, ignite | | | (Gun cotton). | and reweigh. Loss = | | | | _Cellulose_. | | | |_________________________| | | | | | | | Residue consists of | | | | sawdust, charcoal, |