Registration Dossier

Administrative data

Endpoint:
oxidising liquids
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report Date:
2010

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: UN-RTDG Manual of Tests and Criteria O.2: Test for oxidizing liquids
Deviations:
no
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): Sulphuryl dichloride
- Analytical purity: 99.6 %

Study design

Contact with:
other: fibrous cellulose

Results and discussion

Test results (Oxidising liquids)open allclose all
Sample tested:
test mixture (not specified)
Remarks:
migrated information
Parameter:
mean pressure rise time
Result:
4 400 ms
Remarks on result:
other: 2.5 g sulphuryl dichloride / 2.5 g cellulose
Sample tested:
reference mixture (not specified)
Remarks:
migrated information
Parameter:
mean pressure rise time
Result:
58 ms
Remarks on result:
other: 50 % perchloric acid / cellulose (1:1)
Sample tested:
reference mixture (not specified)
Remarks:
migrated information
Parameter:
mean pressure rise time
Result:
1 900 ms
Remarks on result:
other: 40 % aq. sodium chlorate / cellulose (1:1)
Sample tested:
reference mixture (not specified)
Remarks:
migrated information
Parameter:
mean pressure rise time
Result:
2 860 ms
Remarks on result:
other: 65 % aq. nitric acid / cellulose (1:1)

Any other information on results incl. tables

Spontaneous ignition upon mixing was not observed.

In each case, the average burning time of the individual sulphuryl dichloride / cellulose mixture is considerable longer than the reference values.

Further, sulphuryl dichloride reacts with the hydroxy groups of cellulose in the following principal manner:

R-OH + SO2Cl2 → R-O-SO2Cl + HCl

R’-OH + R-O-SO2Cl → R’-O-SO2-O-R + HCl

Therefore, sulphuryl dichloride exhibits the behaviour of a typical inorganic acid chloride. The reaction taking

place is not an oxidation; the pressure rise may be primarily attributed to the formation of HCl and not CO2 and

H2O which should be formed in an oxidation reaction.

Therefore, sulphuryl dichloride is not to be classified as an oxidising liquid.

Details:

 

Amount (g)

 

Run No.

Sample

Cellulose

Time for pressure rise from 690 kPa to 2070 kPa (ms)

1

2.5

2.5

5250

2

2.5

2.5

3300

3

2.5

2.5

4200

4

2.5

2.5

5750

5

2.5

2.5

3500

Minimum burning time (ms)

3300

Minimum burning time (ms)

4400

Standard deviation (ms)

1073

Applicant's summary and conclusion

Interpretation of results:
other: no oxidising properties
Remarks:
Migrated information
Executive summary:

Klein A and Heitkamp D (Currenta, 2010)

The average burning time of the individual sulphuryl dichloride / cellulose mixture is considerable longer than the reference values (50 % perchloric acid / cellulose (1:1); 40 % aq. sodium chlorate / cellulose (1:1); 65 % aq. nitric acid / cellulose (1:1).

Sulphuryl dichloride exhibits the behaviour of a typical inorganic acid chloride. The reaction taking

place is not an oxidation; the pressure rise may be primarily attributed to the formation of HCl and not CO2and

H2O which should be formed in an oxidation reaction.

Therefore, sulphuryl dichloride is not to be classified as an oxidising liquid.