Methyl O-(4-amino-3,5-dichloro-6-fluoropyridin-2-yloxy)acetate

Oxidising properties

Administrative data

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

26 April 1991-25 November 1991.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP guideline study

Cross-reference

Reason / purpose for cross-reference:

reference to same study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1991

Report date:

1991

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:

Methyl O-(4-amino-3,5-dichloro-6-fluoropyridin-2-yloxy)acetate

EC Number:

407-550-4

EC Name:

Methyl O-(4-amino-3,5-dichloro-6-fluoropyridin-2-yloxy)acetate

Cas Number:

69184-17-4

Molecular formula:

Hill formula: C8 H7 Cl2 F N2 O3 CAS formula: C8 H7 Cl2 F N2 O3

IUPAC Name:

methyl 2-[(4-amino-3,5-dichloro-6-fluoropyridin-2-yl)oxy]acetate

Details on test material:

- Name of test material (as cited in study report): Fluroxypyr methyl ester
- Physical state: black crystalline powder
- Analytical purity: 90.8%
- Purity test date: 28.08.1990
- Lot/batch No.: C-3B
- Expiration date of the lot/batch: August 1992
- Storage condition of test material: at room temperature in the dark

Study design

Contact with:

powdered cellulose

Duration of test (contact time):

>= 716 - <= 770 s

Results and discussion

Test results (Oxidising solids)

Test results (Oxidising solids) 1

Sample tested:

reference mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

0.35 other: mm/s (migrated information)

Remarks on result:

other: barium nitrate/celulose reference

Test results (Oxidising solids) 2

Sample tested:

reference mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

0.278 other: mm/s (migrated information)

Remarks on result:

other: celulose reference

Test results (Oxidising solids) 3

Sample tested:

test mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

0.282 other: mm/s (migrated information)

Remarks on result:

other: substance 10% w/w mixed with dried cellulose

Test results (Oxidising solids) 4

Sample tested:

test mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

0.265 other: mm/s (migrated information)

Remarks on result:

other: substance 20% w/w mixed with dried cellulose

Any other information on results incl. tables

Preliminary test:

Mixture	Burning time (s)	Observation
Barium nitrate/ cellulose (3:2 w/w)	245	Vigorous burning (yellow flame)
Cellulose	490	Slow burning (pale blue flame)
Substance (technical)/ cellulose (2:1 w/w)	-	Cone charred at surface (no flame sustained)

Main test:

Substance (technical, % w/w)	Time for 200 mm to burn (s)	Burning rate (mm/s)
10	716	0.279
20	768	0.260
30	*	*
40	*	*
50	*	*
60	*	*
Barium nitrate/ cellulose reference	571	0.350
Cellulose reference	720	0.278

* Flame not sustained over 200 mm length.

Since the 10% and 20% w/w test mixtures were the only mixtures to sustain a flame over a length of 200 mm, the test was repeated a further five times for each of these.

10% w/w:

Run	Burning time (s)	Burning rate (mm/s)
1	716	0.279
2	720	0.278
3	718	0.279
4	730	0.274
5	710	0.282
6	745	0.268
mean	723	0.277

20% w/w:

Run	Burning time (s)	Burning rate (mm/s)
1	768	0.260
2	756	0.265
3	766	0.261
4	769	0.260
5	759	0.264
6	770	0.260
mean	765	0.262

The mean burning rates were found to be slightly slower than dried cellulose alone and considerably slower than the barium

nitrate/dried cellulose reference mixture. Therefore substance is considered to be non-oxidising.

Applicant's summary and conclusion

Interpretation of results:

other: no oxidising properties

Remarks:

Migrated information