arsenicaladj.n.

1591 J. Hester tr. J. Du Chesne Breefe Aunswere Expos. I. Aubertus f. 27 For Mercurie is a flying spirit hauing a certaine arsenicall aire [L. auram..Arsenicalem] verie hurtfull to the bodie.

1605 T. Tymme tr. J. Du Chesne Pract. Chymicall & Hermeticall Physicke i. xiii. 60 They..worke venemous and mortal effects, and that by reason of the arsenical mercury.

1671 Philos. Trans. (Royal Soc.) 6 2210 The Nature and Causes of the Plague..deducing the Pestilential venom from the Air infected and corrupted chiefly by Arsenical Exhalations.

1791 W. Hamilton tr. C.-L. Berthollet Elements Art of Dyeing I. i. i. v. 80 Phosphoric and arsenical acids.

1812 H. Davy Elements Chem. Philos. 412 The ore known by the name of arsenical cobalt.

1859 W. B. Carpenter Animal Physiol. (rev. ed.) vi. 292 Arsenical poisoning..from the accidental inhalation of a small quantity of arseniuretted hydrogen.

1863 W. C. Baldwin Afr. Hunting 410 Having no arsenical soap, [I] was unable to preserve the skin.

1881 H. E. Roscoe & C. Schorlemmer Treat. Chem. I. 541 The..employment of arsenical wall-papers..is much to be deprecated, still more is the employment of the insoluble arsenical green for colouring light cotton fabrics.

1936 A. Lowy & B. Harrow Introd. Org. Chem. (ed. 4) xxxiii. 352 After many trials with many arsenical compounds, Ehrlich was in a position to formulate this general rule.

2013 Master Detective Apr. 34/3 On August 4th, Armstrong, a keen gardener, purchased a quantity of arsenical weedkiller in powdered form.

1818 W. Price tr. M. J. B. Orfila Pop. Treat. Remedies Poisoning & Apparent Death Index Treatment of..poisoning by the..arsenicals [Fr. les arsenicaux].

1864 W. Frazer Treatm. Dis. Skin vii. 29 Some obstinate cases of psoriasis will yield to colchicum and potash, in which arsenicals had previously failed.

1921 Potato Mag. July 18/3 In comparing these arsenicals it is found that paris green kills most quickly. On the other hand it is usually the most expensive and does not adhere well to the foliage.

1949 H. W. Florey et al. Antibiotics II. xxxvi. 1199 It seems clear that doses of arsenicals and penicillin..were effective in experimental animals when combined.

1955 Sci. News Let. 16 July 40/2 Many of the itch remedies used today..such as..arsenicals, may depend for their results on a partial blocking of the..itch enzymes.

2011 M. G. Papich Saunders Handbk. Vet. Drugs (ed. 3) 467 Arsenicals alter glucose uptake and metabolism to eliminate heartworms.

1741 tr. J. A. Cramer Elements Art of assaying Metals ii. 222 The white arsenical Pyrites [L. Arsenicales Pyritae], turn also a great Quantity of Lead into Glass.

1820 R. Jameson Syst. Mineral. (ed. 3) III. 398 It is usually accompanied with argentiferous arsenical-pyrites.

1875 J. D. Dana Syst. Mineral. (new ed.) 76 Löllingite. Prismatic Arsenical Pyrites.

1884 Jrnl. Chem. Soc. 46 404 No explanation can be given of the variable percentage of sulphur in arsenical pyrites.

1905 57th Ann. Rep. N.Y. State Mus. 1903 1 182 Arsenical pyrites. Two compounds of arsenic and iron are here included: a sulpharsenid of iron known as arsenopyrite or mispickel and a diarsenid of iron..known as löllingite or leucopyrite.

1968 Materials & Technol. I. 393 The most important minerals are arsenopyrites.., arsenical pyrites or löllingite (iron arsenide, containing 73% arsenic), [etc.].

2002 C. Reilly Metal Contamination Food x. 200 The cause of the outbreak was the use of arsenical pyrites to make the sulphuric acid that was used in the beer fermentation.