4,4,7,7-tetraethoxy-3,8-dioxa-4,7-disiladecane

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-ignition temperature (liquids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2015-11-27 to 2015-12-04

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Remarks:

The study is conducted in accordance with relevant test method but in compliance with ISO 9001:2008

Qualifier:

according to guideline

Guideline:

EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))

Deviations:

no

Qualifier:

according to guideline

Guideline:

DIN EN 14522, Method S (Determination of the auto ignition temperature of gases and vapours)

Deviations:

no

GLP compliance:

no

Other quality assurance:

other: ISO 9001:2008

Key result

Auto-ignition temperature:

228 °C

Atm. press.:

969 - 979 hPa

Preliminary result

No.	Test temperature [°C]	Number of sample [drops]	Result concerning ignition [negative(-) / positive(+)]	Atmospheric pressure [hPa]
1	212.5	5	-	967
2	239.4	5	-
3	262.0	5	-
4	283.5	5	-
5	307.8	5	-
6	317.8	5	+
Lowest temperature		317.8°C

 

 

Test series 1

No.	Test temperature [°C]	Number of sample [drops]	Result concerning ignition [negative(-) / positive(+)]	Atmospheric pressure [hPa]
1	313.0	5	+	969
2	308.0	5	+
3	303.0	12	+
4	298.0	12	+
5	293.0	12	+
6	288.0	12	+
7	283.0	12	+
8	278.0	12	+
9	273.0	12	+
10	268.0	12	+
11	263.0	12	+
12	258.0	12	+
13	253.0	12	+
14	248.0	12	+
15	243.0	12	+
16	238.0	12	+
17	233.0	12	+
18	228.0	12	-
19	228.0	7	-
20	228.0	17	-
21	231.0	12	-
22	231.0	7	-
23	231.0	17	-
Lowest temperature		233°C

 

 

Test series 2

No.	Test temperature [°C]	Number of sample [drops]	Result concerning ignition [negative(-) / positive(+)]	Atmospheric pressure [hPa]
1	238.0	12	+	977
2	233.0	12	+
3	228.0	12	-
4	228.0	7	-
5	228.0	17	-
6	231.0	12	-
7	231.0	7	-
8	231.0	17	-
Lowest temperature		233°C

 

 

Test series 3

No.	Test temperature [°C]	Number of sample [drops]	Result concerning ignition [negative(-) / positive(+)]	Atmospheric pressure [hPa]
1	243.0	12	+	979
2	238.0	12	+
3	233.0	12	+
4	228.0	12	-
5	228.0	7	-
6	228.0	17	-
7	231.0	12	+
8	229.0	12	-
9	229.0	7	-
10	229.0	17	-
Lowest temperature		231°C

 

Summary of results

Parameter	Value
Lowest value of test series 1:	233°C
Lowest value of test series 2:	233°C
Lowest value of test series 3:	231°C
Lowest value of all test series:	231°C
Absolute deviation of the lowest value (1.5%):	3.5°C
Auto-ignition temperature:	228°C

 

According to DIN EN 14522 the lowest value of all test series (231°C) was reduced by the deviation value based on the precision of the method (rel. 1.5% = 3.5°C). The resulting value was rounded to the next integral number (228°C).

Conclusions:

An auto-ignition temperature value of 228°C at 969-979 hPa was determined for the substance using a relevant test method and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable.

Description of key information

Auto-ignition temperature: 228°C at 969 -979 hPa (DIN EN 14522)

Additional information

An auto-ignition temperature value of 228°C at 969 -979 hPa was determined for the substance using a relevant test method and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable.