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Lead Dioxide 5241
<br /> rification to the disulfide,peak^; jag metal and alloys:storage batteries:in ceramics,plastics, 5234. Lead Bromate. Br,OSPb; mol wt 463.01. Br
<br /> Ice of Several different forms'^ and electronic devices: in building construction: in solder 34.52%O 20.73%. Pb 44.75%. Pb(Bro,)t.
<br /> ulfjde of pantetheine: Rasmuj` and other lead alloys: in the metallurgy of steel and other Monohydrate,colorless crystals. Poisonousl d 5.53. Dec
<br /> ioL Med.73, 658(1950);Bro metals. Review of uses, corrosion metallurgy: Mullarkey, at 180'. Slightly sol in cold water, moderately in hot water.
<br /> 5(1952). Coenzyme A digested'` Ind. Eng. Chem.49, 1607(1957). Note: Pure lead bromate is not dangerous,but when made
<br /> shows 2-4 LBF-active comroby Aping lead acetate with an alkali bromate, it may deco-
<br /> acterio.61, 193(1951). Revkiie. '' 5129. Lead Acetate. Neutral lead acetate: normal lead nate or explode on heating.striki„c or rubbing because some
<br /> nd Related Forms of the acetate ; sugar of lead; salt of Saturn. C,H2O,Pb; mol wt acetate is occluded.
<br />(LBF)" in Adm.. EnzymoLl ' 325.28.' C 14.77%, H 1.8676. Pb 63.70%, O 19.67%. Pb-
<br /> (CHSCOO)t. 5235. Lead Bromide. Br,Pb:mol wt 367.04. Br 43.55%,
<br /> Trihydrate,colorless crystals or white granules or powder; Pb 56.45%. PbBrt.
<br /> 267.2: at. no. 82; valence ' slight acetic odor: slowly effloresces. Poisonous( Takes up White, tryst powder. Poisonousl d 6.66. mp 373'. On
<br /> topes: 204(1-40%);206(25.2%w}„ Cot from air and becomes incompletely sol. d 2.55. mp 75* solidifying forms a horn-like mass. Sol in about 200 parts
<br /> artificial, radioactive jactopes}'. ,�. when rapidly heated; at a little above 100'it begins to lou cold water, 20 parts boiling water; insol in alcohol.
<br /> e of the metals known to the;" acetic acid; dec completely above 200'. One gram dissolves
<br /> urrence in earth's count about°p in 1.6 ml water.0.5 ml boiling water, 30 ml alcohol freely 5236. Lead Butyrate. Butyric acid, lead salt. CSHrr f
<br /> .002%(depth of crust: 16 km},6 s01 in glycerol. Aq sons of lead acetate dissolve lead mon- 05Pb; mol wt 381.40. C 23.1916, H 3.7076. O 16.78%, Pb f
<br /> galena, other minerals induda! oxide. pH of 5%aq soln at 2S = 5.5-6.5. Keep well dosed. 54.33%. Pb(C5H7ot)t. I
<br />(PbCOt), mimerite[PbCls.3pbs: Inca njury Adds, sol sulfates citrates, tartrates. chlorides, Colorless scales or viuid mass. Pbuonous/ mp about 90'.
<br /> [Pb,C]s.3Pbs(PO a)yy]. carbonates, alkalies. tannin.phosphates.resorcinol.salicylic Insol in water;sal in dil HNO,
<br /> Heuser, Metall 9, 675 (195 acid, phenol. chloral hydrate sulfites, vegetable infusions, 5237. Lead Chlorate. CI O Pb: mol wt 374.12. Cl E
<br /> gfeld. Eng. Mining J. 153„ tinctures. LD,i.p_in rats: 200 mg/kg.Bradley.Frederick. r a
<br /> ). Prepn of high purity I Ind. Med. 10, Ind. H.M. Sect. 2, 15(1941). 18.95%.O 23.667o, Pb 55.39%. Pb(CIOt)t.
<br /> d. (Milan)34,629(1952),. Warningl Avoid breathing dust. Wear dust mask ap- Colorless. deliquesc crystals. Poisonous/ d 3.9. Dec at
<br /> Technik (Berlin) 2, 393 (194 proved by U.S. Bureau of Mines for this purpose. Wash 2717. Sol in 0.7 pert water. Freely in alcohol.
<br /> J. Electrochem. Soc. 101, - thoroughly before eating or smoking. Keep away from feed 5238. Lead Chloride. CI Pb:mol wt 278.12. Cl23.49%,
<br /> t )ml. 59, 494 (1967), GA.-67. or food products. This substance has been listed as a carcin- a �!
<br /> lead,its alloys and corrpds: . Ogen in [M1e Second Annual Report on Carcinogens(NTP 81- Pb 74.50%. PbClt. Occurs in nature as the mineral cotun-
<br /> Iloys, Properties and Teclain 43, Dec. 1981) pp 149-151. nits ?i
<br /> .. 1970)351 g g g While. tryst powder. Poisonous/ d 5.85. mp 501'. by
<br /> pp:Abel in Com ,i USE: Dyeing and printing cottons; wri htin silks: manse( 950. Sol in 93 parts cold water, 30 parts boiling water: {I
<br /> ry vol. 2,J. C. BaiJar,Jr. et al, lead salts,chrome-yellow; also for various analytical ponce-
<br /> rd. t973) pp 105-146; H. E - dotes. e.g- detection of sulfide, determination of Crop readily sol in soln of NHSCI, NHSNO3. alkali hydroxides:
<br /> lopedia of Che mi' I Technology ` Moot. slowly in glycerol. MLD orally to guinea pigs: 1.5-2.0
<br /> New York. 3rd ed., 1981) pp THERAP CAT: Astringent. g/kg, Handbook of Toxicology vol. 1, W. S. Spector, Fd.
<br /> enlcjty studies OI Iead and I®d THERAP CAT(t'Er): Astringent and Sedative(usually in lo- (Saunders.Philadelphia, 1956)pp 176-177.
<br /> 23, 325-415(1980). tions) for bruises and superficial inflammation. Has been USE: Manu( Pattison's while lead, Verona Yellow, Tur-
<br /> metal. Highly lustrous when used internally in fliarrheas. ner's Patent Yellow, lead oxychloride: as solder and flux.
<br /> xposure to air. Very soft and $229. Lead Antimonate(V). Naples yellow. Approx 5239. Lead Chromate(VD. Chrome yellow;Cologne yel.
<br /> t. rolled, and extruded. Cubic low; King's yellow; Leipzig yellow; Paris yellow; C.I. Pig.
<br /> ; by 1740'. dm 11.34;d at cop.',. Pb3(SbO4)2. mens Vellowl4: C.I. 77600. Cr05Pb: mol wt 723.22. Cr
<br /> twits.41, 326(1954). Heat of Orange-yellow powder. Incl in water,dil acids. etas .ll 1938;%.I. 7600. . rO,Pb;.Occurs 3 nature as
<br /> g. Heat capacity (201: 0.031 USE: As pigment in oil painting, staining glass, crockery she minerals u0eoite 64.11phos%.
<br /> PbCre. Ref: Colour Index
<br /> -cm) at 20': 20.65; at 100': "-+ and porcelain. vol.4 Ord ed.. 197 1)p 4677.
<br /> V: 96.74. Vapor pressure at 5230. Lead Arsenate. Approx PbHAsOa. Occurs in Yellow or orange-yellow powder. d 6.3. cop 844-. It is
<br /> )29 X +0.1(2 v. Coe1.- one of the most insol salts(0.2 mg/I HO). Insol in acetic
<br /> nature e, the mineral r. Poenite.
<br /> 00')29 X 10-5.(20-300°)3133 2giracid: sol in solos 0f fixed alkali hydroxides, in dil HNO,-
<br /> 77
<br /> 1025; thermal conductivity inger . -. White,heavy powder. d into
<br /> pyf d senar At about 28-
<br /> 77 at 225': Franel,Kingery.J. loses Ht0 and is converted into pyraarunate. Insol in wa- LD,i.p.in guinea pigs: 156 mg/kg. Handbook a/Taxirolo-
<br /> 54); viscosity of molten lead ter: sol in HNO,. caustic alkalies. LDut in rats, rabbits: gy vol. 1,W. S. Spector, Ed. (Saunders, Philadelphia, 1956)
<br /> 2.32 cp, (600') 1.54 cp,(8001 -- approx 825, 125 mg/kg orally, Voigt et at.. J. Am. Pharm. pp 176-177.
<br /> Assoc.37, 122(1948). USE: Pigment in oil and water colors; printing fabrics,
<br /> cal of fusion study: Douglas. USE: As constituent of various insecticides for larvae of decorating china and porcelain: in chemical analysis of or.
<br /> 4824 (1954); hardness 1 on game substances: in traffic paints.
<br /> (high purity Pb)4.0: Mcf.elg
<br /> THERAP CATypsy moth, boll oll weevil. etc.Has been used as a trniadde; inudi- Note: Basic lead chromates of various shades of color
<br /> (1945). Reacts with hot caned tide from brown-yellow to red are used as pigments.
<br /> hydrochloric or sulfuric acid
<br /> organic acids in the presence 5231. Lead Arsenite. Approx Pb(AsO,)t: 5240. Lead Chromate(VI) Oxide. Chromic acid lend.
<br /> ater, hydrofluoric acid,bone. White powder. Poisonous) d 5.85. Insol rn water:sol to (2+) soft (1:2); basic lead chromate: red lead chromate;
<br /> dd HNO,. chrome red; chromium lead oxide: Persian red; Austrian
<br /> ost common in young childta +: USE: As insecticide like the arsenate. cinnabar. CrPbtO,;mol wt 546.40. C 9.52%.Pb 75.84%,O
<br /> is. vomiting, malaise, convw. i. 14.64%. PBCrO,.PbO. See: Colour Index vol. 4.Ord ed..
<br /> cranial pressure. May leave 5232. Lead Azide. NSPb;mol wt 291.26. N 28.86%, Pb 1971)p 4677.
<br /> ood lead increased above 0.05 71.14%. Pb(NtI. Prcpd from sodium azide and lead nitrate: Red powder. Insol in water.
<br /> w weight loss, weakness,ane- Schenk in Han�book of Preparative Inorganic Chemistry vol- USE: As pigment.
<br /> is is usually occupational due 1. G. Brauer, Pd. (Academic Press. New York, 2nd ed.,
<br /> ust or fumes. Wristdrop and 1463) p 763. Most complete description: B.T. Fedoroff et 5741. Lead Dioxide. Lead oxide brown; lead peroxide:
<br /> there are vague G.I.and CNS - sal.. Encyclopedia of Explosives and Related Items vol. I (Pic- lead superoxide. OtPb: mol wt 239.21. O 13.38%. Pb
<br /> od >0.05 mg G.I.
<br /> of urine 'r- l sonny Arsenal, Dover, N.J., 1960)pp A545-A587. 86.62%. Occurs in nature as the mineral plaanerjte. Lab
<br /> a diagnosis of Pb poisoning Needles or white powder. Explodes at 350'or on percus- Prepn from lead acetate and calcium hypochlorite: Newell,
<br /> g Edathamil may be helpful in 1101. Heat of formation (251: +110.5 kcal/mol. Soly in Manson. Inorg. Syn. 1,45(1939); by hydrolysis of lead ace-
<br /> on. Review of toxicity: Clivi- water. 0.023%at IK: 0.09°/at 7o'. Freely sol in acetic acid. tate: Kuhn. Hammer, Be,83,413(1930).
<br /> Products,R. E.Gosselin d at. S�- In101 in NH50H. Dark-brown powder: evolves oxygen when heated, first
<br /> Itimore,4th ed., 1976)Section ,) USE: As primer in explosives. Generally used in the form forming PbtOa. at high temp PbO. d 9.38. Insol in water;
<br /> ,R. L.Singhal,J.A.Thomas. of dext inated lead azidesol in HCl with evolution of Cl;in dil HNO,in presence of
<br /> rg, Baltimore. 1980) 514 PP :# HO,,oxalic add,or other reducers:sol in alkali iodide solus
<br /> for tank linings, piping. 5233. Lead Borate. Approx Pb(BO,)t.HtO. with liberation of iodine: soluble in hot caustic alkali solos.
<br /> rosive gases and liqs used White powder. Poisonousl Insoluble in water: soluble in LD,,i.p.in guinea pigs: 200 mg/kg. Handbook of Toxicolo-
<br /> (r refining, halogenatjonr„ dil HNO3. gy vol. 1,W. S. Spector. Ed. (Saunders, Philadelphia, 1956)
<br /> ation; for x-ray and a USE: Drier for varnishes and paints: with other metals pp 176-177.
<br /> I tetraethyllead, pigments left. Ag) in galvanoplasty for production of conducting USE: Electrodes in batteries; oxidizing agent in menuf
<br /> inorganic lead compds;'. asatings on glass, pottery, porcelain,and chinaware. dyes;as discharge in dyeing with indigo:menuf rubber sub-
<br /> Consult the cross index before using this section. Page 777
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