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EC number: 268-159-0 | CAS number: 68015-93-0
Ignition of the test item within 5 minutes after introduction was observed with each sample volume and with each test a minimum auto-ignition temperature was obtained. The maximum deviation between the three values was < 20°C. According to the guidelines, no further testing was required.
The lowest temperature at which ignition of the test item occurred was 362°C. This temperature was rounded down to the nearest multiple of 5°C giving an auto-ignition temperature of the test item of 360°C.
Table1 Main study –auto-ignition temperature of the test item
Colour of the flame
The auto-ignition temperature of the test item was determined using a commercially available auto-ignition temperature apparatus (Chilworth Technology,). The method is applicable to test items with an auto-ignition temperature in the range 75°C – 650°C.
The test item is auto-ignitable with an auto-ignition temperature of 360°C at 1000.5 – 1014.2 hPa.
The auto-ignition temperature was determined using the method described in BS 4056.
Furnace consisting of a refractory cylinder, manufactured by Carbolite, fitted with thermocouples fortemperature control and measurement.
A known quantity of the test substance was introduced into a heated open Erlenmeyer flask (200 ml) containing air. The contents of the flask were observed in a darkened room for five minutes following introduction of a sample or until ignition occurred. Ignition was evidenced by the sudden appearance of a flame inside the flask. If a flame was not observed in five minutes, the quantity of sample tested was considered non-flammable at the temperature of the test flask. If a flame was observed, the timer was stopped and the time interval between sample introduction and the appearance of the flame recorded to the nearest second as the time-lag.
The auto-ignition temperature of the test substance was found to be 364°C.
The test was repeated at different temperatures and with different sample quantities until the minimum ignition temperature was obtained. The temperature was reduced by 2°C and six replicate tests conducted using the quantity at which the lowest ignition temperature was found.
The lowest flask temperature at which ignition occurred was taken as the auto-ignition temperature.
Method A16. : The auto-ignition temperature of the the Substance was found to be 360°C at 1000.5 – 1014.2 hPa.
Method A15. : The auto-ignition temperature of the the Substance was found to be 364°C.
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