1222

SULPHUR.

potassium, an electro-negative metallic sulphuret, which will dissolve in the h? e ithe sulphuret of potassium be saturated. This saline compound is to be eE ?£ a ]'ofto effect double decompositions with the oxysalts; that is, to convert the ral “ ‘ati'' eanother base, combined with an oxacid, into a sulphosalt. 3. If the electro-neg ^sulphuret be put in powder into a solution of the hydrosul] huret of potassa, is

solve and expel the sulphureted hydrogen with effervescence: just as carbonic f( , e

displaced by a stronger acid. For his other three methods tf preparing snlph° ,a ’his Elements, vol. iii. p. 336, Fr. translation. fC Iid,

SULPHUR, Brimstone (Soufre , Fr.; Schwefel , Germ.), is a simple combustible^,non-metallic, of a peculiar yellow color, very brittle, melting at the temperature ^ jnFahr., and possessing, after it has been fused, a specific gravity of T99. ^ ^inter’ 0 'a wann hand, a roll of sulphur emits a crackling sound, by the fracture of I,s (heparts; and when it is rubbed, it emits a peculiar well-known smell, and acqwr® ‘ (j r e,same lime negative electricity. When heated to the temperature of 560° F. it taburns away with a dull blue flame of a suffocating odor; and leaves no residuum- ^ airmore strongly heated, sulphur burns with a vivid white flame. It is not affector water. ,

Sulphur is an abundant product of nature; existing scritimes pure or m® 1 / form*

and at others in intimate chemical combinaAn with oxygen, and various m e ® t hes e

ing sulphates and sulphurets. See ores cT Cormi, Iron , Leae, &c., unmetals. fining std '

Fig. 1100 represents one of the cast-iron retorts used at Marseilles for , rB a ] a rg fphur, wherein it is melted and converted into vapors, which are led /in i)ii> n,ete Ichamber for condensation. The body a, of the retort is an iron pot, 3 feet l c j,arg eoutside, 22 inches deep, half an inch thick, which weighs 14 cwts., and reeeive 8 flan 1 ®of 8 cwts. of crude sulphur. The grate is 8 inches under its bottom, whence ^ aIJ drises and plays round its sides. A cast-iron capital b, being luted to l» . eI £, >s

covered wiih sand, the opening in front is shut with an iron plate. The cli joob

23 feet long, 11 feet wide, and 13 feet high, with walls £2 inches thick. or flaP'

at each gable, ''f/'re, fdoers, e, 10 inches sq gf ,lieplaced at the i s forop eBchimney c. The »

ing the valves are led Th e

ti e side of f w"* e C risS h«entrance to the change %V0 1I

with an iron door- / there 3 'opposite to the re » floor, ftwo apertures near the «taking out the s P , nS -{ng

of the° two retorts bel w On |7| or

a chamber is ch?r» e , ut one8 cwts. ofsulphm-^ -" e

-fired first, and wan « gentleneat, Jest the brimstone fro 1 "Should oversow; but when <"*fumes begin to rise copious*}?

complete in • « a stronger flame. The di$'

in J&e . Urs » Thr** l Mat ion commences within a

When the n. Set in operation ° U,S afte r puttin', r ‘°" r o/ ’ kindling the fire, and/f x Ptosion$^ 1 ay < i' :ess of distil - ° 1!re *° the retort, the seeond if

remain 'floT^u’ ‘'‘o^apabm'’ ftom ‘hepresen^r U ' iag heeB some time suspended,

acid should h d durin S these iP "“' s ' *>e onenZ?' 0 aln,0s phenca! air; to obviate the(Jn "him ? h( l C ’ m ' ier] oll lvT?" 'he retort e '' e, - v ten minutes; but they should

day. fylVIfnaptim dml * 3tt ^<Wovir / the T(fSux of sulphurous fumes f

cipher i n ‘V ,lni lh >y, the r f the Wee} L the rL ‘ C rp J°. r,s - The distillation is earned

the sulphur Jf md state- 0 n ,\ !lri,hl - r acquire s ..P® ^ e,n S repeated four times mjThe fiuZT.i P 1 * hue ° ,‘. J “ e sixth, i ts ,JL h a de $ ree " f heat as to preserve‘he‘stilling temper “ c h account the r ' 1crature becoming nearly 300° F-, g‘ r

‘“Peiature is about ^ * allowed to cool on the Sunday

W ■ The sulphur is drawn off through twoof the chamber opposite to t-w the sulphur is—-tab

iron pipes cast in the iron doors of the orifices on the sidefurnace. The iron stoppers being taken out of the mouths

of *h, e K approp 1

,ri° te

inrnace. ine nun stoppers Deing lakcn out oi uis , | n to u»*

allowed to run along an iron spout placed over red-hot chare 3 bord er '

* • -ellow

wooden moulds.

Native sulphur in its pure state is solid, brittle, transpai

rent, yellow, or 5"