p-Tert-Butylphenol - UNEP Chemicals

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OECD SIDS P-TERT-BUTYLPHENOL 108 Irritating [ ]; Moderate irritating [ ]; Slightly irritating [X]; Not irritating [ ] *See Remarks Classification: Highly corrosive (causes severe burns) [ ]; Corrosive (causes burns) [ ]; Irritating [ ]; Not irritating [ ] Method: Other (BASF test) GLP: Yes [ ] No [ ] ? [X] Test substance: purity: 99 % Remarks: When butyl carbitol acetate was used as solvent, repeat application of 10 % solution produced only very slight simple irritation, and 0.1 and 1 % solution caused no irritation. On the other hands, repeat application of 10 % solution in olive oil produced a marked simple irritation and 5 %, 1 % and 0.1 % solution in olive oil were slightly irritating. However, it was believed that most of the irritation in these instances was due to the olive oil. Reference: The Dow Chemical Company: 1997a (g) Species/strain: Rabbit Results: Highly corrosive [ ]; Corrosive [ ]; Highly irritating [X]; Irritating [ ]; Moderate irritating [ ]; Slightly irritating [ ]; Not irritating [ ] *See Remarks Classification: Highly corrosive (causes severe burns) [ ]; Corrosive (causes burns) [ ]; Irritating [ ]; Not irritating [ ] Method: Other GLP: Yes [ ] No [ ] ? [X] Test substance: a mixture of 66.3 % p-t-butylphenol, 13.4 % o-t-butylphenol, 19.8 % phenol and 0.5 % di-t-butylphenol Remarks: The subject material was applied both dry and wet with water to the shaven abdomen of rabbits for various periods of time, and then removed by washing with alcohol. As a result, severity of skin irritation was as followed. 1.0 minutes of exposure time: + for wet and ± for dry 5.0 minutes of exposure time: ++ for wet and + for dry 15.0 minutes of exposure time: +++ for wet and +++ for dry 30.0 minutes of exposure time: ++++ for wet and ++++ for dry 60.0 minutes of exposure time: ++++ for wet and ++++ for dry Reference: The Dow Chemical Company: 1997b 5.2.2 EYE IRRITATION/CORROSION (a) Species/strain: New Zealand white rabbit Results: Highly corrosive [ ]; Corrosive [ ]; Highly irritating [X]; Irritating [ ]; Moderate irritating [ ]; Slightly irritating [ ]; Not irritating [ ] Classification: Irritating [ ]; Not irritating [ ]; Risk of serious damage to eyes [ ] Method: Standard Draize test GLP: Yes [ ] No [ ] ? [X] Test substance: purity: 99 % Remarks: Dose: 10 or 80 mg (dry, finely ground powder) Severe corneal injury, iritis, and severe conjunctival irritation was observed and generally persisted for 21 days after exposure. This effect was severe and moderate to severe at 80 mg and 10 mg, respectively. At 10 mg, the severity of this effect decreased with time. Reference: Klonne et al.: 1988 UNEP Publications
OECD SIDS P-TERT-BUTYLPHENOL (b) Species/strain: Rabbit Results: Highly corrosive [ ]; Corrosive [ ]; Highly irritating [X]; Irritating [ ]; Moderate irritating [ ]; Slightly irritating [ ]; Not irritating [ ] Classification: Irritating [ ]; Not irritating [ ]; Risk of serious damage to eyes [ ] Method: Standard Draize test GLP: Yes [ ] No [ ] ? [X] Test substance: purity: unknown Remarks: Dose: 50 µg/24 hours Reference: Prehled Prumyslove Toxikologie: 1986 (c) Species/strain: Rabbit Results: Highly corrosive [ ]; Corrosive [ ]; Highly irritating [X]; Irritating [ ]; Moderate irritating [ ]; Slightly irritating [ ]; Not irritating [ ] *See Remarks Classification: Irritating [ ]; Not irritating [ ]; Risk of serious damage to eyes [ ] Method: Other GLP: Yes [ ] No [X] ? [ ] Test substance: purity: unknown Remarks: Application of excess of 1 % solution in water or propylene glycol to the centre of the cornea and examination after 18 - 24 hours resulted in injury grade 9 of 10 (not classifiable according to current day standards). Reference: Smyth et al.: 1969 (d) Species/strain: Rabbit Results: Highly corrosive [ ]; Corrosive [X]; Highly irritating [ ]; Irritating [ ]; Moderate irritating [ ]; Slightly irritating [ ]; Not irritating [ ] *See Remarks Classification: Irritating [ ]; Not irritating [ ]; Risk of serious damage to eyes [ ] Method: Other: BASF Test GLP: Yes [ ] No [X] ? [ ] Test substance: purity: unknown Remarks: Corrosion was induced, but the severity was not described in IUCLID Database. Reference: BASF AG: 1971 5.3 SKIN SENSITISATION (a) Type: Maximisation test Species/strain: Dunkin Hartley guinea pig (male) Results: Sensitizing [ ]; Not sensitizing [X]; Ambiguous [ ] Classification: Sensitizing [ ]; Not sensitizing [ ] Method: OECD Guidelines for Testing of Chemicals, Section 4, No. 406, “Skin Sensitization” GLP: Yes [X] No [ ] ? [ ] Test substance: purity: 99.89 % Remarks: Three pairs of intracutaneous injections of 0.5 % p-t-butylphenol (0.1 cm 3 volume) were given in the bare skin of shoulder region, one of each pair on either side of the midline. After one week, a filter paper was covered with the 10 % p-t-butylphenol or with the vehicle (about 0.4 g/patch) and placed onto the shoulder region of the animals on top of the injections and held in place UNEP Publications 109
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