A manual of pharmacy / by William Thomas Brande.

Date:
1833
Catalogue details

Licence: Public Domain Mark

Credit: A manual of pharmacy / by William Thomas Brande. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    gradually deposits a white powder, which is sulphate of lead, a salt sparingly soluble in the concentrated, but insoluble in the dilute acid. On evaporating 100 parts of common sul- phuric acid in a platinum capsule, there is usually a residue of about 1 per cent., consisting of the sulphates of potassa and of lead. Sulphuric acid is largely consumed in the pharmaceutical laboratory. Its real strength or value may be most accurately determined by ascertaining its saturating power in regard to dry subcarbonate of soda, of which salt 100 grains neutralise 92 grains of pure liquid sulphuric acid. Supposing sulphuric acid to be pure, its value or strength will be directly as its specific gravity ; and the following valuable table, by Dr. lire, shows the quantity of the liquid acid and of real or dry acid in 100 parts, by weight, of the diluted acid at different densities. Table of the Quantity of Oil of Fitriol and Dry Sulphuric Acid in 100 parts of Dilute, at different Densities. Liquid. Sp. Gr. Dry. Liquid. Sp. Gr. Dry. Liquid. Sp. Gr. Dry. 100 1-8485 81-54 66 1-5503 .53-82 32 1-2334 26-09 99 1-8475 80-72 65 1-5390 53-00 31 1-2260 25-28 98 1-8460 79-90 64 1-5280 52-18 30 1-2184 24-46 97 1-8439 79-09 63 1*5170 51-37 29 1-2108 23-65 96 1-8410 78-28 62 1-5066 50-55 28 1-2032 22-83 95 1-8376 77-46 61 1-4960 49-74 27 1-1956 22-01 94 1-8336 76-65 60 1-4860 48-92 26 1-1876 21-20 93 1-8290 75-83 59 1-4760 48-11 25 1-1792 20-38 92 1-8233 75-02 58 1-4660 47-29 24 1-1706 19-57 91 1-8179 74-20 57 1-4560 46-48 23 1-1626 18-75 90 1-8115 73-39 56 1-4460 45-66 22 1-1549 17-94 89 1-8043 72-57 55 1-4360 44-85 21 1-1480 17-12 88 1-7962 71-75 54 1-4265 44-03 20 1-1410 16-31 87 1-7870 70-94 53 1-4170 43-22 19 1-1330 15-49 86 1-7774 70-12 52 1-4073 42-40 18 1-1246 14-68 85 1-7673 69-31 51 1-3977 41-58 17 1-1165 13-86 84 1-7570 68-49 50 1-3884 40-77 16 1-1090 13-05 83 1 - 7465 67-68 49 1-3788 39-95 15 1-1019 12-23 82 1-7360 66-86 48 1-3697 39-14 14 1-0953 11-41 81 1-7245 66-05 47 1-3612 38-32 13 1-0887 10-60 80 1-7120 65-23 46 1-3530 37-51 12 1-0809 9-78 79 1-6993 64-42 45 1-3440 36-69 11 1-0743 8-97 78 1-6870 63-60 44 1-3345 35-88 10 1-0682 8-15 77 1-6750 62-78 43 1-3255 , 35-06 9 1-0614 7-34 76 1-6630 61-97 42 1-3165 34-25 8 1-0544 6-52 75 1*6520 61-15 41 1-3080 33-43 7 1 - 0477 5-71 74 1-6415 60-34 40 1-2999 32-61 6 1-0405 4-89 73 1-6321 59-52 39 1-2913 31-80 5 1-0336 4-08 72 1•6204 58-71 38 1-2826 30-98 4 1-0268 3-26 71 1-6090 57-89 37 1-2740 30-17 3 1-0206 2-446 70 1-5975 57-08 36 1-2654 29-35 2 1-0140 1-63 69 1-5868 56-26 35 1-2572 28-54 1 1-0074 0-8154 68 1-5760 55-45 34 1-2490 27-72 67 1-5648 54-63 33 1-2409 26-91