Title: Benzotriazole and Tolyltriazole. Evaluation of health hazards and proposal of health based quality criteria for soil and drinking water Author
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978-87-93026-81-0(1)
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- 4.2.1 Skin irritation
4.1.3 Dermal contact
4.1.3.1 Benzotriazole Five female rabbits received a single application of 2000 mg/kg to the clipped skin for 24 hours. No mortality was observed. Gross necropsy findings were not reported. (Sherwin-Williams Co. 1976 - quoted from BIBRA 1995; EPA/OTS 1989 - quoted from TOXLINE pre 1982- 1990). 4.1.3.2 Tolyltriazole The LD 50 -value reported for tolyltriazole (24 hours, covered contact) for rabbits was > 2000 mg/kg b.w. The LD 50 -value for 5-methylbenzotriazole (24 hours, covered contact) for guinea-pigs was reported to be > 1000 mg/kg b.w. (TNO BIBRA 1998). 12 4.2 Irritation 4.2.1 Skin irritation 4.2.1.1 Benzotriazole Signs of skin irritation were seen in three out of five rabbits following a 24-hour covered contact with 2000 mg/kg b.w. to abraded skin [enheden (mg/kg b.w.) er korrekt citeret]. No irritation was reported after 72 hours when about 80 mg/cm 2 was applied to the intact or abraded skin of 12 rabbits and covered for 24 hours. (Sherwin-Williams Co. 1976 - quoted from BIBRA 1995). Benzotriazole was mildly irritating to guinea pigs at a concentration of 50% in ethanol (McAlack 1974 - quoted from BIBRA 1995). 4.2.1.2 Tolyltriazole Covered 24-hour application of neat tolyltriazole to abraded rabbit skin caused slight skin redness in three of five animals; however, in a similar test, no irritation was noted in a further six animals. No redness or swelling was evident following similar exposure of intact skin (5-6 rabbits/ group) (Sherwin-Williams 1972a, 1972b - quoted from TNO BIBRA 1998). Covered 24-hour contact with a 40% aqueous paste caused slight swelling of abraded skin and redness of the intact and abraded skin of four rabbits (it is not clear whether tolyltriazole or 5-methylbenzotriazole was applied in this study (Olin Mathieson 1968 - quoted from TNO BIBRA 1998). An industrial grade (no further details given) of neat 5-methylbenzotriazole was irritating to rabbits given a 24-hour covered patch (Olin corp. 1973 - quoted from TNO BIBRA 1998). In guinea pigs, slight skin irritation was observed with 24-hour covered exposure to neat 5-methylbenzotriazole (Eastman Kodak 1975 - quoted from TNO BIBRA 1998). No skin reactions were seen when ten guinea pigs were given a 24-hour covered patch test with 10% tolyltriazole in petrolatum (Ciba Geigy 1982a - quoted from TNO BIBRA 1998). Download 202.46 Kb. Do'stlaringiz bilan baham: |
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