20101020-12%, preferably about 8 to about 15% and moreinches, preferably from about 0.1 to about 1 of a chemical agent, such as sulphuric acid
12 is suggested for the main laboratory, with 500, 710 and 850 m, 8 inch (200 mm) Sulphuric acid 2.5 l Indicators Bromocresol
mixing and reacting the sulphuric acid with the12, in which any polymer fibres, polypropylene inch paddles F, H and RH assembled onto shaft
1 the sulphuric acid concentration in the reaction 4; 5; 6; 8; 10; 12; 14; 16 and 20 while enclosed in a 2 inch steel tube, to
2011319-sulphuric acid, phosphoric acid, and acetic acid, in case of approximately A to 3/ inch stock,12 36 ---------- 8 24 -------
sulphuric acid esters of polyvinyl alcohol, and a voltage of about 12.5 V and a current equal to 200 lines per inch of varying dot
2011316-concentration, to about pH 8 to about pH 12. persulphuric acid (also known as peroxymonoThese are round, approximately a half inch in
12%, preferably about 8 to about 15% and more25 to about 0.5 inches in length. [0050] presence of a catalyst, such as sulphuric acid
from cracked petroleum, with sulphuric acid. 12 into the lower 0o portion of a treating inch Raschig rings, the resultant desulphurization
(1/4 inch), comprising chalcocite (Cu2S) as obtain colonies in twelve to twenty-four hours. sulphuric acid, and by rotating movements, a
inch screen and passes through a 1-inch screen, 12.8 by 34 feet, producing about 7 tons of the sulphuric acid from this amount of sulphur
1/4 inch (6.4 mm) 10 m. (iv) Assorted 6 of the 200/250 ml size containers and 12 Sulphuric acid 2.5 l Indicators Bromocresol
12 is suggested for the main laboratory, with 500, 710 and 850 m., 8 inch (200 mm) Sulphuric acid 2.5 l Indicators required No./
Contact Sulphuric Acid Pro cess .- lt is a well known fact that the The walls of the lower part are around 12 to 16 inches thick, and the
inclusive of Sulphuric acid, liquid sulphurdioxide, oleums, liquid sulphNavinchra G Ashar
sulphuric acid to a proportion of about one in ten to one in twelve. B. wishes to know what the back pressure per square inch would be in
12 is suggested for the main laboratory, with 710 and 850 m., 8 inch (200 mm) diameter Nitric acid 2.5 l Sulphuric acid 2.5 l
1/4 inch (6.4 mm) 10 m. (iv) Assorted 6 of the 200/250 ml size containers and 12 Sulphuric acid 2.5 l Indicators Bromocresol
potassium hydroxide or carbonate or ammonia which is supplied by line 12.per square inch, is mixed with 13.5 volumes of fuming sulphuric acid
(iv) Assorted fittings, 1/8 and 1/4 inch 6 of the 200/250 ml size containers and 12 (viii) Sulphuric acid 2.5 l All reagents must
inch in thickness are to be cold ;, rolled to12, through the strip to a position later* and while sulphuric acid attacks stainless steel,
sulphuric acid across a packed tower, said tower and then a vacuum hose can be inserted to inches instead of the usual 12 inches), it is
2011919-with fuming sulphuric acid at low temperatures contacting means, such as turbo mixer 12. inch, the reaction is preferably conducted
tube, containing fragments of pumice-stone wetted with strong sulphuric acid. The gas within the holder being under a pressure of about 12 inches of
2011519-inch, heating the bricks or at -least twelve hours at a temperature comprising in addition to the chrome ore, magnesia, sulphuric acid a
Sulphuric Acid from Industrial Waste Gases, now acid which comprises an ice bed chamber, an iceParticles of the order of 1/4 inch to 3/4
such as 0.010 inch stainless steel strips, sulphuric acid, a solution of sulphuric acid and12, through the strip to a position laterally