Benzeneacetic acid, 2,4,5-trifluoro-

Oxidising properties

Administrative data

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Report date:

2006

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.17 (Oxidising Properties (Solids))

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

-

EC Number:

466-070-3

EC Name:

-

Cas Number:

209995-38-0

Molecular formula:

C8H5F3O2

IUPAC Name:

2-(2,4,5-trifluorophenyl)acetic acid

Results and discussion

Test results (Oxidising solids)

Test results (Oxidising solids) 1

Key result

Sample tested:

4:1 sample-to-cellulose ratio

Parameter:

burning rate

Result:

0.27 mm/s

Test results (Oxidising solids) 2

Key result

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

burning rate

Result:

0.49 mm/s

Any other information on results incl. tables

Preliminary test: The test article was mixed with dried cellulose in the proportion 2 to 1 (w/w) and the mixture was formed into a small cone shaped pile.
The ignition source was applied to the cone, but no ignition or significant strong reaction was observed.

The maximum burning rate of the reference material was achieved with barium nitrate mixed with dried cellulose 60:40 (w/w).

Burning time (over 200 mm): 342 sec   Burning rate : 0.58 mm/sec

The burning rate of dried cellulose was:

Burning time (over 200 mm): 270 sec   Burning rate : 0.74 mm/sec

The test article was mixed with dried cellulose in various ratios and tested as following.

For all the mixtures the burning rates were higher than the value obtained for the reference mixture.

Mixture	Sample/cellulose (% w/w)	Burning time over 200 mm (sec)	Burning rate (mm/sec)
A	10/90	309	0.56
B	20/80	380	0.53
C	30/70	420	0.48
D	40/60	383	0.52
E	50/50	410	0.49
F	60/40	392	0.51
G	70/30	510	0.39
H	80/20	751	0.27
I	90/10	burning does not propagate

In order to investigate a possible false positive hypothesis, the test was repeated on the same ratios of the mixture A and B, using silica gel instead of the test article. The results obtained are:

Mixture	Silica gel/cellulose (% w/w)	Burning time over 200 mm (sec)	Burning rate (mm/sec)
A	10/90	382	0.52
B	20/80	370	0.54

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

The test sample is a non-oxidizing substance, according to the guideline in Official Journal L 283 A.17.