IR 2955, 2924, 2854, 1600, 1462, 1378, 1364, 1203, 1142, 1054, 1012, 832, 762, 722, 698, 661, 605, 588 cm-1 13C nmr 128, 126.8, 126.4, 126, 79, 78.7, 78, 37.1, 36.7 32.6, 31.6, 30, 29.4, 29.1, 27.8, 26.9, 26.5, 24.5, 22.8, 20.2, 19.5, 19.1, 13.9, 11.3 ppm PHYSICAL AND CHEMICAL PROPERTIES OLOA 777R contains 50 % notified polymer in lubricating oil solvent. The notified polymer is never isolated. The physical and chemical properties below are generally those of the product OLOA 777R rather than of the notified polymer. Appearance at 20°C and 101.3 kPa: dark brown viscous liquid Boiling Point: decomposes before boiling Specific Gravity: 0.987 at 15°C Vapour Pressure: notified polymer not expected to be volatile; vapour pressure of OLOA 777R 4.910-5 kPa at 25°C (lubricating oil) Water Solubility: < 100 ppb at 25°C (see comments below) Particle Size: not applicable as OLOA 777R is a viscous liquid Partition Co-efficient (n-octanol/water): log Kow > 7 Hydrolysis as a Function of pH: not determined (see comments below) Adsorption/Desorption: expected to adsorb strongly (see comments below) Dissociation Constant: not determined (see comments below) Flash Point: > 200°C Autoignition Temperature: > 200°C Flammability Limits: combustible liquid (see comments below) Explosive Properties: not expected to be explosive Reactivity/Stability: expected to be stable under normal conditions
R43 May sensitisation by skin contact (NOHSC, 1999b) Non-hazardous Impurities (> 1% by weight): Chemical name: polyisobutylene Weight percentage: 13 % CAS No.: 9003-27-4 Additives/Adjuvants: Chemical name: distillates, hydrotreated heavy paraffinic Synonyms: lubricating oil CAS No.: 64742-54-7 Weight percentage: up to 50 % Toxic properties: classified as a carcinogen, R45(2) unless the DMSO extract the procedure as defined by IP 346 is shown to be less than 3 % (NOHSC, 1999b) Chemical name: distillates, solvent refined heavy paraffinic Synonyms: lubricating oil CAS No.: 64741-88-4 Weight percentage: up to 50 % Toxic properties: classified as a carcinogen, R45(2) unless the DMSO extract under the procedure as defined by IP 346 is shown to be less than 3 % (NOHSC, 1999b) The notifier has indicated that the mineral oils are not classified as carcinogens on the basis of the IP 346 results. 5. USE, VOLUME AND FORMULATION The notified polymer will be used in the blending of automotive diesel and petrol crankcase engine oils. The purpose of the additive is as an inhibitor to reduce deposits on pistons and in the engine crankcase and to control oxidation of the lubricant at the high engine operating temperatures. The notified polymer will be imported in lubricating oil additive packages containing 10 – 50 % OLOA 777R and will be reformulated in Australia to produce the finished lubricants, where the concentration will be 0.5 - 3 % notified polymer (1 – 6 % OLOA 777R). The notifier indicates that approximately five additive package formulations will contain the
LD50: > 5000 mg/kg Result: OLOA 777R was of very low acute oral toxicity in rats 9.1.2 Dermal Toxicity (Driscoll, 1998b) Species/strain: rat/Sprague-Dawley CD Number/sex of animals: 5/sex Observation period: 14 days Method of administration: single, 24-hour semi-occluded application to intact skin; dose level 2000 mg/kg bodyweight Test method: OECD TG 402; EC directive 92/69/EEC Mortality: no deaths occurred during the study Clinical observations: no clinical of toxicity were noted during the study; all animals showed expected gain in bodyweight during the study Morphological findings: no abnormalities were noted at necropsy Dermal observations: no signs of skin irritation were noted during the study LD50: > 2000 mg/kg bodyweight Result: OLOA 777R was of low dermal toxicity in rats 9.1.3 Inhalation Toxicity No inhalation toxicity data were presented by the notifier, with the argument that because the notified polymer has a very low vapour pressure (less than 4.910-5 kPa at 25°C) and a viscosity of 520 cSt at 100°C, it is unlikely to present an inhalation hazard either as a vapour or as an aerosol. This argument was accepted for the purposes of this assessment. Skin Irritation (Driscoll, 1998a) Species/strain: rabbit/New Zealand white Number/sex of animals: 6/male Observation period: 4 days