What is TCPA ( tetrachlorophtalicanhydride ) ?
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Tetrachlorophthalic Anhydride is what you mean-two words.  Its used as a flame retardant in epoxy resin, plastics, paper and textiles. It is also used as an intermediate to produce pharmaceuticals, dyes, plasticizers, and other organic compounds.
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See this link\n\nhttp://us.badm.washington.edu/yalch/Research/atmosphe.htm
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Ca3PO4 and CuOH\n\n^^those are the answers
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best website:\n\nhttp://h10025.www1.hp.com/ewfrf/wc/genericDocument?lc=en&cc=us&docname=bph07103
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CCl4...the Cl cancel each other out in the chemical arrangement.
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LHS:\nPb4+\nSn2+\nCl-\n\nRHS:\nPb2+\nSn4+\nCl-\n\nOxidation number of Pb in PbCl4 decreases = it is reduced = it oxidizes the other = it is the oxidizing agent
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H2O2 gradually decomposes to water and oxygen. The process is catalyzed by heat, light, base, and traces of heavy metal ions (such as iron, manganese, etc), but not Tin. \nTin surprisingly, along with many other organic compounds, such as acetanillide are used as stabilizing agent at ppm level.\nIt's estimated when properly stored at 15-25 oC under dark condition in plastic bottle, free from contaminants ACS grade H2O2 degrades at a rate of 1-3 %/year. So it's not that bad.
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Its a chemistry article abstract entitled "Thermal Decomposition of Ammonium Perchlorate containing a polymeric additive". Abstracts are summaries of the entire article. This article is part of an Journal called Propellants, Explosives, Pyrotechnics. That's all i can see.
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Nitric acid is a highly oxidizing acid, and when combined with stainless steel will promote oxidation of the chromium content of the steel, creating a film that will protect the steel from further attack by the acid. Stainless steel is a recommended container for nitric acid. \n\nHydrochloric acid is less likely to undergo this interfering oxidation reduction reaction, leaving the steel unprotected, so even though it is a weaker acid, it will dissolve the steel. \n\nSometimes the turtle wins the race.
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It is a tetrahydrate of Iron III salicylate.  The structure can be found in the paper listed below:
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Polyethylene terephthalate ( PET, PETE or the obsolete PETP or PET-P) is a thermoplastic polymer resin of the polyester family that is used in synthetic fibers; beverage, food and other liquid containers; thermoforming applications; and engineering resins often in combination with glass fiber. It is one of the most important raw materials used in man-made fibers.\n\nDepending on its processing and thermal history, it may exist both as an amorphous (transparent) and as a semi-crystalline (opaque and white) material. \nDensity 1370 kg/m3 \nYoung's modulus(E) 2800–3100 MPa \nTensile strength(σt) 55–75 MPa \nElongation @ break 50–150% \nnotch test 3.6 kJ/m2 \nGlass temperature 75 °C \nmelting point 260 °C \nVicat B 170 °C \nThermal conductivity 0.24 W/m.K \nlinear expansion coefficient (α) 7×10−5/K \nSpecific heat (c) 1.0 kJ/kg.K \nWater absorption (ASTM) 0.16 \nPrice 0.5–1.25 €/kg
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It's an organic acid having a\n\nO=C-OH group; the H of the -OH group is the proton source, \n\nthus: -O(-) H(+).\n\np.s. In aqueous solution. The fourth carbon bond is not drawn.
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http://www.bplans.com/ma/article.cfm/147\nhttp://www.amazon.com/gp/product/0749439270/002-7923748-5380815?v=glance&n=283155
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here is the link:\nhttp://condor.depaul.edu/~danderso/POWERP/POWERP2/tsld003.htm
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dichlorodiphenyltrichloroethane     -2,2-bis(p-chlorophenyl)-1,1,1,-trichloroethane, chlorinated hydrocarbon compound used as an insecticide toxic to humans and animals when swallowed or absorbed through the skin.
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If you want information go to \n\nhttp://www.epa.gov/ebtpages/pollchemicalspolychlorinatedbiphenylspcbs.html\n\nAs stated, you should not handle samples of PCBs.
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It is known by its initials as TCP.  Oldtimers will recognize TCP as a gasoline additive from the sixties.  Shell Oil used to advertise that their gas contained TCP.\n\nTCP is made by reacting phosphorus oxychloride with cresylic acids.  The "ortho" part comes from the position of the methyl group on the phenol as in ortho, para, meta.  Cresylic acids were by-products of coke production (iron production not the other kinds!) but are now made synthetically.  HCl is a by-product that was removed by scrubbing with sodium hydroxide.  \n\nA secondary use for TCP was as a flame-retardant plasticizer for PVC (polyvinyl chloride).