1,1'-(methylenedi-4,1-phenylene)bis(3-butylurea)

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosiveness, other

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1993-11-24 to 1994-09-26

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.14 (Explosive properties)

Version / remarks:

EC 92/69

Deviations:

no

GLP compliance:

yes

Specific details on test material used for the study:

Analytical purity: >= 99.65 %
Lot/batch No.: 93.166

Key result

Parameter:

other: More sensitive to shock than m-dinitrobenzene

Remarks on result:

negative (not further specified)

Key result

Parameter:

other: More sensitive to friction than m-dinitrobenzene

Remarks on result:

negative (not further specified)

Key result

Parameter:

other: Explosive under influence of flame

Remarks on result:

negative (not further specified)

1) Thermal sensitivity (effect of a flame)

About 16 g of test article as supplied were placed into the steel tube which was heated by four propane burners for 5 minutes.

Three tests were carried out using a 6mm diameter orifice plate and three others with a 2 mm diameter orifice plate.

2) Mechanical sensitivity (shock)

The test article was ground and sieved (0.5 mm) before the tests.

Then 40 mm³ of test article were submitted to a shock dropping the 10 kg mass from 0.40 m.

The test was repeated 6 times.

3) Mechanical sensitivity (friction)

The test was ground and sieved (0.5 mm) before the tests.

10 mm³ of test article were submitted to a friction of 360 and 120 newtons, on a porcelain plate.

These tests were repeated 6 times.

For each tests, observations were made and explosions recorded.

For safety reasons, before performing the tests, preliminary trials were carried out to check if the tests could be performed without risk for the operator.

No positive reaction was obtained during these trials.

Results

1.) Thermal sensitivity (effect of a flame)

 - 6 mm diameter orifice plate:

 

Test n°	Observations	Explosion
1	white smoke, about 25 cm orange flame	no
2	white smoke, about 25 cm orange flame	no
3	white smoke, about 25 cm orange flame	no

 

For about one minute at the beginning of each test, some test article spreading above the tube ignited. After the end of the test, ignition continued for about 1 minute and 30 seconds and white or black smoke evolution was observed. The residual test article in the tube turned into a solid having the shape of the steel tube.

 

  - 2 mm diameter orifice plate:

 

Test n°	Observations	Explosion
1	white smoke, > 25 cm thin orange flame	no
2	white smoke, > 25 cm thin orange flame	no
3	white smoke, > 25 cm thin orange flame	no

 

For about 50 seconds at the beginning of each test, some test article spreading above the tube ignited. After the end of the test, ignition continued and black smoke evolution was observed. The residual test article in the tube turned into a solid having the shape of the steel tube.

 

2.) Mechanical sensitivity (shock)

 Room temperature: 19 °C

 

- 10 kg mass from 0.40 m:

 

Test n°	Observations	Explosion
1 2 3 4 5 6	no reaction no reaction no reaction no reaction no reaction no reaction	no no no no no no

 

- 5 kg mass from 0.15 m: Not required, as no explosion was noted using the 10 kg mass.

 

3.) Mechanical sensitivity (friction)

Room temperature: 19 °C

 

- 360 N loading:

 

Test n°	Observations	Explosion
1 2 3 4 5 6	sparks, brown and black traces sparks, brown and black traces sparks, brown and black traces sparks, brown and black traces sparks, brown and black traces sparks, brown and black traces	no no no no no no

 

 

- 120 N loading: As sparks were observed using the 360 N loading, a second test was performed using 120 N loading.

 

Test n°	Observations	Explosion
1 2 3 4 5 6	no reaction no reaction no reaction no reaction no reaction no reaction	no no no no no no

 

Interpretation of results:

GHS criteria not met

Conclusions:

HAT ISO was tested for explosive properties by impact, friction and heat according to EU Guideline A 14. No explosive reaction was recorded during all three testings. Therefore, HAT ISO did not present any explosive properties in this test. No classification and labelling is required according to Regulation 1272/2008/EC (CLP).

Executive summary:

HAT ISO was tested for explosive properties by impact, friction and heat according to EU Guideline A14

The test method comprises three parts:

1) Thermal sensitivity (effect of a flame)

9 cm³ of test article are heated for up to 5 minutes using four propane burners. A test is considered as giving an explosion if the steel tube containing the test article is fragmented in three ore more pieces.

2) Mechanical sensitivity (shock)

40 mm³ of the test article are submitted to a series of six tests dropping a 10 kg mass from 0.40 m. Further tests may be performed using a 5 kg mass from 0.15 m. Bursting into flame and/or a report are equivalent to explosion.

3) Mechanical sensitivity (friction)

10 mm³ of the test article are applied on a porcelain plate, which is moved 10 mm forwards and backwards in a time of 0.44 seconds under a porcelain peg applied with a 360 N loading. The test is repeated 6 times. Further tests may be performed using a 120 N loading.

Crepitation and/or a report of bursting in to flame are equivalent to explosion.

Liquid articles cannot be tested for sensitivity to friction.

Results:

No explosive reaction was recorded during all three testings. Therefore, HAT ISO did not present any explosive properties in this test.

Description of key information

HAT ISO was tested for explosive properties by impact, friction and heat according to EU Guideline A.14, Explosive properties. No explosive reaction was recorded during all three testings. Therefore, HAT ISO did not reveal any explosive properties in this test.

Key value for chemical safety assessment

Explosiveness:

non explosive

Justification for classification or non-classification

HAT ISO was tested for explosive properties by impact, friction and heat according to EU Guideline A 14. No explosive reaction was recorded during all three testings. Therefore, HAT  ISO did not present any explosive properties in this test. No classification and labelling is required according to Regulation (EC) No 1272/2008 (CLP), as amended for the twelfth time in Regulation (EU) 2019/521.