Page 516 - Copper and Bronze in Art: Corrosion, Colorants, Getty Museum Conservation, By David Scott

Cappella del Tesoro of San Gen- chalcocite chloride(s), copper. See copper
naro (Italy), altarpiece for, as corrosion product, 228, chloride(s); specific types
copper support in, 318 -19 230, 232 chloride ions
carbon, isotope ratios of, 107 in niello, 238 in burial environment, 0
4
carbon dioxide properties of, 226, 227t role in corrosion, 129-31,13 0 f
atmospheric concentrations of, thermodynamic data for, 1361 chlorine, and indoor corrosion
441, 47 chalconatronite, 117-20 rates, 6 i
in burial environment, 37 as corrosion product, 119-20 , chloroform, 383
in copper carbonate formation, 301 chloroxiphite, 143
111-13 formation of Christ's Entry into Brussels in 1889
and corrosion rates, 47 sodium sesquicarbonate and, (Ensor), 207 p
carbonates, basic copper, 100-20 . 118, 119-20 , 364 emerald green in, 207p , 312,
See also specific types in solution, 111 4541
carbonized material, in burial as pigment, 119 chromotropic acid test, 6 i
4
environment, 0 properties of, 100,102t , 117,118 chrysocolla, 253-55
carbonyl sulfide, atmospheric synthesis of, 118 -19 as pigment, 252, 254-5 5
concentrations of use of, 119 properties of, 201p , 253-54 ,
conversion factors for, 441 in verdigris synthesis, 291 2531, 267n l
modern, 441 X-ray diffraction data for, in reaction soldering of gold, 254
carnauba wax, 385, 397n3 8 4241, 4461 X-ray diffraction data for,
cassiterite, in Egyptian green, 263 chalcopyrite 253-54 , 430 1
Cat, Statuette of a, 217p as corrosion product, i96p , cities
conservation treatment of, 197p, 229, 230 air pollution in, 43 - 45
217p, 353 formation of, 230 outdoor corrosion rates in,
Cathedral of Augsburg (Germany), chalcosiderite 53-54 , 531
copper salts on bronze properties of, 241, 242 t sulfides in patinas in, 232
doors of, 305 turquoise and, 247 citric acid, 366, 367, 370-7 1
Cathedral of the Nativity of chalitis, 146 buffered, 366
the Virgin, Ferapontov chemical alteration, in laboratory, Cladosporium aeris, and bronze
Monastery (Russia) 363-6 4 disease, 126
langite in, 165 chemical cleaning treatments, claraite, properties of, 100,10 2 t,
pseudomalachite in, 246 362-6 9 116
I
synthetic malachite in, 115 -16 general, 363 - 64 claringbullite, 4i
cationic control, corrosion under, 12 localized, 364-6 5 clay, burials in, 38
Ceder green, 254 reagents for, 366 - 69 Clean Air Act, 8 0 n i 3
celadon ware, sanggam, 91 chemical corrosion reactions, 14 cleaning
cellulose, mineralization of, 73, chemical formulas, list of, 4 i 8 t - 2 i t chemical, 362 - 69
74-7 6 chessylite. See azurite mechanical, 357- 62
cellulose acetate, 383 China, synthetic blue pigment in, cleaning solutions. See also specific
cellulose nitrate lacquers, 383 - 84 291, 415 types
ceramic(s) Chinese bronze(s) and chalconatronite formation,
broken, conservation of, 94 ancient, early study of, 1 119-2 0
copper colorants in, 91, 93 ion transport in, 12 -13 clinoatacamite, 124-2 5
glazes on, 93 - 94 Chinese bronze mirrors formation from azurite, 110
Ceres or Juno, statuette of, 334 composition of, 339 vs. paratacamite, 125
patina on, 334 examples of, 214 p, 215 p, properties of, 1231,125
chalcanthite 216p, 339 X-ray diffraction data for, 425 t
historical references to, 146,147 patinas on, 339 - 49 clocks, in Wallace Collection
as pigment, 146 burial environment and, brown fuzzies on, 233-34 , 234 f
properties of, i48t , 399 340-4 4 X-ray diffraction data for, 4271
ΐ
stability-field diagrams for, 4θ f mechanisms of corrosion Coatings, 382-9 1
thermodynamic data for, 1361 and, 340 arsenic, 327
chalcanthum, 146 replication of, 344 - 48 on bronzes, 327, 329-3 2
chalcitis, 147 structure of, 214p, 2i6p, 339 metallic, 163-64
for paintings on
Chios, 325, 35in 4 copper, 317-I8
chlorargyrite, 239 polymer, 387- 88

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