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(1979)(2) 2,3,4,5-tetrachlorophenol Ide et al.

The increasing rate of photodecomposition with increasing pH, reported also by Wang (1965), provides evidence of an ionic mechanism, the initial and rate-limiting reaction being the photo-nucleophilic replacement of PCP chlorine atoms by hydroxyl groups (Crosby et al., 1972).

Zaera, Surface-Induced Rotational Isomerism within Solid 1,3-Diiodopropane Thin Films, Chem.

(1982) evaluated the chronic toxicities of commercial PCP, purified PCP, and Dowicide EC-7 in 90-day partial life-cycle studies with fathead minnows (Pimephales promelas). The commercial grade PCP used contained relatively large quantities of hexachlorobenzene, chlorophenoxyphenols, chlorodiphenyloxides, chlorodibenzodioxins, and chlorodibenzofurans.

(1979)(3) 2,3,5,6-tetrachlorophenol Ide et al.

(1979)(4) 2,3,4,6-tetrachlorophenol Ide et al.

Sodium pentachlorphenate (Na-PCP) Molecular formula: C6Cl5ONa C6Cl5ONa x H2O (as monohydrate)Common synonyms: penta-ate; pentachlorophenate sodium; pentachlorophenol, sodium salt; pentachlorophenoxy sodium; pentaphenate; phenol, pentachloro-, sodium derivative monohydrate; sodium PCP; sodium pentachlorophenate; sodium pentachlorophenolate; sodium pentachlorophenoxide Common trade names: Albapin; Cryptogil Na; Dow Dormant Fungicide; Dowicide G-St; Dowicide G; Napclor-G; Santobrite; Weed-beads; Xylophene Na; Witophen N CAS registry number: (Na-PCP); (Na-PCP monohydrate)2.1.3.

Impurities in Pentachlorophenol Technical PCP has been shown to contain a large number of impurities, depending on the manufacturing method (section 3.2.1).

(1972); Kuwatsuka & Igarashi (1975)(11) 3,5-dichlorophenol Ide et al.

(1979)(7) 2,3,4-trichlorophenol Kuwatsuka & Igarashi (1975)(8) 2,3,5-trichlorophenol Ide et al.

(1980) [Health evaluation of PCP (pentachlorophenol) containing wood preservatives in rooms.] Holz Roh Werkst., 38: 429-432 (in German).

(1971) Results of 90-day toxicological study in male rats maintained on diets containing production grade or "purified" pentachlorophenol, Midland, Michigan, Dow Chemical Company, 23 pp.

(acetate) (1979)b(13) 2,3,5,6-tetrachloroanisole Ide et al.
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(acetate) (1979)b(14) 2,3,4,6-tetrachloroanisole Engel et al.

Hexachlorodibenzo- p-dioxin (H6CDD), which is also considered highly toxic and carcinogenic (section 8), was found at levels of 0.03 - 35 mg/kg (Firestone et al., 1972), 9 - 27 mg/kg (Johnson et al., 1973), and < 0.03 - 10 mg/kg (Buser & Bosshardt, 1976).

(1979)b(15) 2,3,5-trichloroanisole Ide et al.

(1969)tissue solution; NaOH ex- glycol succinate + 2% H3PO4;(human) traction; benzene confirmation by MS and TLC extractionOrganic Hexane/isopropanol Der.

(1972)(17) 3,4-dichloroanisole Ide et al.

(1973) solutionAdipose NaOH extraction; Derivatization with diazo- EC 5 µg/kg 75% Shafiktissue diethyl ether methane; GC analysis (1973)(human) extraction from acidified solutionUrine, Acidic hydrolysis No derivatization; negative MSf 1 ng 90% Dougherty &seminal (urine); hexane/2- chemical ionization (NCI) Piotrowskafluid propanol or hexane/ mass spectrometry; internal (1976a;b)(human) ether extraction from standard: p-chlorobenzophenone acidified solutionTissue, Hexane or benzene Derivatization with diazo- EC 20 µg/kg 91.4- Hoben et al.

(1972)(18) 3,5-dichloroanisole Ide et al.

(1977) GC analysisUrine Hexane extraction Derivatization with acetyl EC 10 µg/litre ns Dahms &(human) from acidified chloride in the presence of Metzner solution pyridine; GC analysis (1979)Urine Benzene extraction Derivatization with diazo- EC 1 µg/litre 93.2- Edgerton(human, from acidified methane; separation of 97.2% et al.

(1972) (19) 3-chloroanisole Ide et al.

(1983) acidified soil; toluene-methylene chloride extraction---------------------------------------------------------------------------------------------------------Table 5.

(1978)(27) 2,3,6-trichlorohydroquinone Reiner et al.

The second method involves an alkaline hydrolysis of hexachlorobenzene (HCB) in methanol and dihydric alcohols, in water and mixtures of different solvents in an autoclave at 130 - 170 °C (Melnikov, 1971).

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