Photocopy paper

Zinc oxide is the most important zinc compound. The principal industrial use of zinc oxide is as a catalyst to shorten the time of vulcanization in the production of mbber. The compound also is used as a white pigment in paints, cosmetics, and photocopy paper, hi everyday life, ZnO is also a common sunscreen. 

In addition to its use in plastics manufacture, thiourea is used in some photographic processes and photocopying papers in organic synthesis as an intermediate (drugs, dyes, cosmetics) in rubber accelerators and as a mold inhibitor. 

You do not buy eggs one at a time. You purchase them in units of a dozen. Similarly, your school does not order photocopy paper by the sheet. The paper is purchased in bundles of 500 sheets, called a ream. It would be impractical to sell sheets of paper individually. 

Use Photography and photocopying papers, organic synthesis (intermediate, dyes, drugs, hair preparations), rubber accelerator, analytical reagent, amino resins, mold inhibitor. 

VOCs as aromatic hydrocarbons and plastic monomer residues emitted from copied, laser-printed and matrix printed paper have been measured by the FLEC (Wolkoff et al., 1993b). Several of these compounds have also been identified in the corresponding tone powders. From a freshly photocopied paper, the initial SER of, e.g., styrene was 5 pg/ (m h). When handling 200 such copies in an office, the styrene concentration in the room air could be calculated to reach 12 pg/m. ... 

Products and Uses Found in photocopy paper, photography, dyes, drugs, and hair preparations as a fixer also used as a mold and mildew preventative. 

Thiourea in photocopying paper can give rise to contact allergy and photosensitivity (van der Leun et al. 1977 Nurse 1980 Kellet et al. 1984). The allergen is available from commercial suppliers (Chap. 46). 

Thiourea, o.i% petrolatum (antioxidant in photocopying paper, photoallergen)... 

Kellet JK, Beck MH, Aukland G (1984) Contact sensitivity to thiourea in photocopy paper. Contact Dermatitis 11 124 Liden C (1990) Contact sdlergy A course of facial dermatitis among visual display unit operators. Am J Contact Dermat 1 171-176... 

Kellett JK, Beck MH, Auckland G (1984) Contact sensitivity to thiourea in photocopy paper. Contact Dermatitis 11 124... 

PCBs are human-made compoimds that were produced from around 1930 in complex mixtures. They were marketed imder various trade names (e.g., Acelor, Aroclor, Clophen, Delor, Fenclor, Kanechlor, Montar, Phenoclor, Sovol, and Turbinol) and had different mean chlorine contents. They were used in numerous applications such as dielectric fluid in capacitors and transformers, hydraulic and heat transfer fluids and additives in pesticides, paints, and photocopy paper [30,65]. Their total world production has been estimated at more than 1.3 million tons and significant quantities have been released into the environment [39]. 

Copy base papers are wood-free. They can be finished to e. g., thermocopy, and photocopy papers with a wide basis weight range of 50 to 180 g m. ... 

Miscellaneous Surface treatment of photocopying paper, membranes for reverse osmosis, bioadhesives. 

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