Pentachlorophenol recommendations

A. Inhalation. The air level of pentachlorophenol considered immediately dangerous to life or health (IDLH) is 2.5 mg/m . The ACGIH recommended workplace air exposure limit (TLV-TWA) is 0.5 mg/m as an 8-hour time-weighted average. 

The common chemical classes of antimicrobial agents used in industry are phenolics, halogen compounds, quaternary ammonium compounds, metal derivatives, amines, alkanol amines, nitro derivatives, anilides, organo-sulfur and sulfur nitrogen compounds. Some recommended agents for latex use are pentachlorophenol, tetrachloroisophthalonitrile, o-phenylphenol, tributyltin oxide, 2-n-octyl-4-isothiazolin-3-one, l-(3-chloroallyl)-3,5,7-tri-aza-l-azoniaadamantane chloride [119],... 

Key to symbols ACA, ammoniacal copper arsenate ACC, Acid copper chromate CCA, chromated copper arsenate CZC, chromated zinc chloride FCAP, Fluor chrome arsenate phenol NR, not recommended Penta, pentachlorophenol. 

In field trials, Mukherji (1972) observed a 90% kill of Chara and Nitella in paddy fields using five kg/ha of pentachlorophenol and also of sodium pentachlorophenate. The author recommended that these chemicals be used as algicides in paddy fields, instead of copper sulphate, which is somewhat scarce in those areas growing large quantities of rice. 

Presence of preservatives. Creosote oil, provided it is not present to excess so that it appears on the surface of freshly machined or sanded wood before the adhesive is applied, is not deleterious to R/F or P/F adhesives. Timber preservatives based on pentachlorophenol or tin, even if up to 1% wax has been added, do not influence these materials. Fire retardants based on ammonium salts may interfere with the cross-linking R/F and P/F adhesives such that recommended periods of cure may have to be extended. M-U/F adhesives are adversely affected if wax is added with the preservative. 

Abbreviations for amino acids and their derivatives follow the revised recommendation of the lUPAC-IUB Committee on Biochemical Nomenclature, entitled Nomenclature and Symbohsm for Amino Acids and Peptides (recommendations of 1983). Nomenclature of branched polypeptides is used in accordance with the recommended nomenclature of graft polymers (lUPAC-lUB recommendations, 1984). For the sake of brevity codes of branched polypeptides were constracted by us using the one-letter symbols of amino acids (Table 1). The abbreviations used in this paper are the following. AK, poly[Lys-(DL-Ala )] AXK, poly[Lys-(DL-Ala -Xi)] XAK, poly[Lys(Xi-DL-Ala )] X = Ser (SAK), Om (OAK), Glu (EAK), or Ac-Glu (Ac-EAK). All amino acids are of L-configuration unless otherwise stated. DPH, l,6-diphenyl-l,3,5-hexatriene ANS, sodium anilino naphthalene sulfonate DPPC, dipalmitoyl phosphatidyl choline PG, phosphatidyl glycerol Z, benzyloxycarbonyl Pep, pentachlorophenol P, polarisation. 

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