3-ethoxy-4-hydroxybenzaldehyde

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosiveness

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From may 18, 2011 to september 08, 2011

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.14 (Explosive properties)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

2010-12-15

Parameter:

other: More sensitive to shock than m-dinitrobenzene

Remarks:

migrated information

Remarks on result:

not measured/tested

Remarks:

control positive used: Hexogen (RDX)

Parameter:

other: More sensitive to friction than m-dinitrobenzene

Remarks:

migrated information

Remarks on result:

not measured/tested

Remarks:

control positive used: Hexogen (RDX)

Parameter:

other: Explosive under influence of flame

Remarks:

migrated information

Remarks on result:

negative (not further specified)

Parameter:

other: Explosive (not specified)

Remarks:

migrated information

Remarks on result:

negative (not further specified)

1. Mechanical sensitivity (friction)

1.1.Preparation of the test item

              The melting point of the test item was situated between 76 and 78°C according to the MSDS. So it was not dried. The test item was sieved at 500 µm. The fraction passing through the sieve was used.

 

1.2.Safety-in-handling test

A small quantity of the test item was submitted to a friction by means of a metallic device. No sign of explosion was recorded.

 

1.3.Main test

Volume of test item in the cylinder: 10 mm³

 

Volume (mm^3)	Loading (N)	Assay No.
		1	2	3	4	5	6
10	360	E + N	E + N	E + N	E + N	E + N	E + N

E is sound of crystal’s crushing.

N is no sign of explosion was observed.

 

1.4.Results

Six negative assays were recorded: No friction sensitivity was noted with the test item with a loading of 360 Newtons.

2. Mechanical sensitivity (shock)

2.1.Preparation of the test item

              The melting point of the test item was situated between 76 and 78°C according to the MSDS. So it was not dried. The test item was sieved at 500 µm. The fraction passing through the sieve was used.

 

2.2.Safety-in-handling test

A small quantity of the test item was submitted to a shock by means of a metallic device. The test item compressed. No sign of explosion was recorded.

 

2.3.Main test

Volume of test item in the cylinder: 40 mm³

 

Volume (mm^3)	Impact		Assay No.
	height (m)	weight (kg)	1	2	3	4	5	6
40	0.40	10	N	N	N	N	N	N

N isno sign of explosion was observed.

2.4.Results

Six negative assays were recorded: No shock sensitivity was noted with the test item.

 

 

3. Heat sensitivity (flame)

3.1.Safety-in-handling test

A small quantity of the test item was submitted to a flame from a gas burner: The test item melted. No sign of explosion was recorded.

 

3.2.Main test

Gas rate:       Gas flow of approximately 3.2 L/min

 

Assay No.	Nozzle plate opening (mm)	Quantity of test item (g)	Effect on steel tube
1	6	About17.8 g	No effect
2	6	About17.8 g	No effect
3	6	About17.6 g	No effect
4	2	About17.7 g	No effect
5	2	About17.5 g	No effect
6	2	About17.6 g	No effect

 

3.3.Observed reactions

Assays using a tube with a hole of 6 mm diameter

Assay No. 1: From 2 minutes 17 seconds to 2 minutes 42 seconds, intermittent yellow flame and white smokes were observed. At 2 minutes 42 seconds, the test item overflowed on the nut and around the tube. From 2 minutes 42 seconds to 3 minutes 52 seconds, a 0.5-m flame was observed all over the nut. From 3 minutes 52 seconds to 4 minutes 19 seconds, a 0.25-m yellow flame was observed on the hole. From 4 minutes
19 seconds to 4 minutes 49 seconds, a little yellow flame was observed.

 

Assay No. 2: From 3 minutes 07 seconds to 3 minutes 35 seconds, intermittent yellow flame and white smokes were observed. At 3 minutes 35 seconds, the test item overflowed on the nut. From 3 minutes 35 seconds to 4 minutes 42 seconds, a flame was observed all over the nut. From 4 minutes 02 seconds to 5 minutes, a 0.5-m yellow flame was observed all over the nut and around the tube with intermittent projections.

 

Assay No. 3: From 3 minutes 25 seconds to 3 minutes 55 seconds, intermittent yellow flame and smokes were observed. From 4 minutes 05 seconds to 4 minutes 22 seconds, a yellow flame was observed all over the nut. From 4 minutes 22 seconds to 5 minutes, a 0.5-m yellow flame was observed all over the nut and around the tube. At 4 minutes 45 seconds, projections were observed.

 

 

Assays using a tube with a hole of 2 mm diameter

 

Assay No. 1: From 3 minutes 48 seconds to 4 minutes 48 seconds, intermittent yellow flame and white smokes were observed. At 4 minutes 48 seconds, the test item overflowed on the nut. From 4 minutes 48 seconds to 5 minutes, a 0.25-m flame was observed all over the nut and around the tube.

Assay No. 2: From 3 minutes 30 seconds to 4 minutes 17 seconds, intermittent yellow flame and white smokes were observed. From 4 minutes 17 seconds to 4 minutes 45 seconds, a flame was observed all over the nut. From 4 minutes 45 seconds to 5 minutes, a 0.25-m flame was observed all over the nut and around the tube. At 4 minutes 55 seconds, projections were observed.

 

Assay No. 3: : From 4 minutes 35 seconds to 5 minute, white smokes were observed. At 4 minutes 52 seconds, yellow flame was observed.

 

 

3.4.Results

Six negative assays were recorded: No heat sensitivity was noted with the test item.

Interpretation of results:

non explosive

Remarks:

Migrated information

Conclusions:

Ethylvanillin is not explosive in contact in a flame, nor shock and nor friction.

Executive summary:

In a GLP study (Défitraces, 2011), Ethylvanillin was tested for its explosive properties, when subjected to heat (heat sensitivity), shock or friction (mechanical sensitivity), according to the EC A14 method.

The results were the following:

 

Mechanical sensitivity (friction)

Six negative assays were recorded: No friction sensitivity was noted with the test item with a loading of 360 Newtons.

 

Mechanical sensitivity (shock)

Six negative assays were recorded: No shock sensitivity was noted with the test item.

 

Heat sensitivity (flame test)

Six negative assays were recorded: No heat sensitivity was noted with the test item.

 

Ethylvanillin was not considered to have explosive properties under our experimental conditions.

 

Description of key information

Ethylvanillin was not explosive in contact in with a flame, nor shock and nor friction.

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

Only one study (Défitraces, 2011) dealing with the explosive properties was available and was selected as key study (quoted reliability 1 according to Klimisch scale). In this study, Ethylvanillin was tested for its explosive properties, when subjected to heat (heat sensitivity), shock or friction (mechanical sensitivity), according to the EC A14 method.

The results were the following:

Mechanical sensitivity (friction)

Six negative assays were recorded: No friction sensitivity was noted with the test item with a loading of 360 Newtons.

 

Mechanical sensitivity (shock)

Six negative assays were recorded: No shock sensitivity was noted with the test item.

 

Heat sensitivity (flame test)

Six negative assays were recorded: No heat sensitivity was noted with the test item.

 

Ethylvanillin was not considered to have explosive properties under our experimental conditions.

Justification for classification or non-classification

Ethylvanillin was tested for its explosive properties, when subjected to heat (heat sensitivity), shock or friction (mechanical sensitivity), according to the EC A14 method. All the experiments gave negative results.

In these conditions, Ethylvanillin is not classified for its explosive properties, according to CLP 1272/2008 (including 2nd ATP), and the directive 67/548/EC.