Trichloro(propyl)silane

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:

2015-03-12 to 2015-03-26

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Remarks:

The study was conducted according to an appropriate test method and in compliance with known quality system (ISO 9001:2008)

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:

349 °C

Atm. press.:

ca. 959 - ca. 971 hPa

Results:

Table 1: Preliminary test:

No.	Test temperature [°C]	Number of sample [drops]	Result concerning ignition [negative(-) / positive(+)]	Atmospheric pressure [hPa]
1	322.5	5	-	976
2	347.2	5	-
3	369.8	5	-
4	393.8	5	-
5	401.6	5	+
Lowest temperature				401.6°C

 

 

Table 2: Test series 1

No.	Test temperature [°C]	Number of sample [drops]	Result concerning ignition [negative(-) / positive(+)]	Atmospheric pressure [hPa]
1	397.0	5	+	970 -
2	392.0	5	+
3	387.0	5	+
4	382.0	5	-
5	382.0	1	-
6	382.0	9	-
7	382.0	13	+
8	377.0	13	-
9	377.0	9	-
10	377.0	5	-
11	377.0	1	-
12	377.0	17	+
13	372.0	10	+
14	367.0	10	+
15	362.0	10	+
16	357.0	10	-
17	357.0	6	-
18	357.0	2	-
19	357.0	14	+
20	352.0	14	-
21	352.0	10	-
22	352.0	6	-
23	352.0	2	-
24	352.0	18	-
25	355.0	14	+
26	353.0	14	-
27	353.0	10	-
28	353.0	6	-
29	353.0	2	-
30	353.0	18	-
Lowest temperature				355°C

 

 

Table 3: Test series 2

No.	Test temperature [°C]	Number of sample [drops]	Result concerning ignition [negative(-) / positive(+)]	Atmospheric pressure [hPa]
1	372.0	10	+	971
2	367.0	10	-
3	367.0	6	+
4	362.0	6	-
5	362.0	2	-
6	362.0	10	+
7	357.0	10	-
8	357.0	6	-
9	357.0	2	-
10	357.0	14	-
11	357.0	18	-
12	360.0	10	-
13	360.0	6	-
14	360.0	2	-
15	360.0	14	-
16	360.0	18	-
Lowest temperature				362°C

 

 

Table 4: Test series 3

No.	Test temperature [°C]	Number of sample [drops]	Result concerning ignition [negative(-) / positive(+)]	Atmospheric pressure [hPa]
1	367.0	10	-	971
2	367.0	6	-
3	367.0	2	-
4	380.0	10	+
5	375.0	10	-
6	375.0	+	+
7	370.0	6	+
8	365.0	6	-
9	365.0	2	-
10	365.0	10	-
11	365.0	14	+
12	360.0	14	-
13	360.0	10	-
14	360.0	6	-
15	360.0	2	+
16	355.0	2	-	966
17	360.0	10	+
18	355.0	10	-
19	355.0	6	-
20	355.0	2	-
21	355.0	14	-
22	355.0	18	-
23	358.0	10	-
24	358.0	6	-
25	358.0	2	-
26	358.0	14	+
27	356.0	14	+
28	354.0	14	-
29	354.0	10	-
30	354.0	6	-
31	354.0	2	-
32	354.0	18	+
33	352.0	18	-
34	352.0	14	-
35	352.0	10	-	959
36	352.0	6	-
37	352.0	2	-
Lowest temperature				354°C

 

 

Table 5: Test series 4

No.	Test temperature [°C]	Number of sample [drops]	Result concerning ignition [negative(-) / positive(+)]	Atmospheric pressure [hPa]
1	365.0	18	-	959
2	380.0	10	+
3	375.0	10	+
4	370.0	10	+
5	365.0	10	+
6	360.0	10	-
7	360.0	6	-
8	360.0	2	-
9	360.0	14	-
10	360.0	18	-
11	363.0	10	-
12	363.0	6	-
13	363.0	2	-
14	363.0	14	-
15	363.0	18	-
Lowest temperature				365°C

 

 

Table 6: Summary of result

Parameter	Value (°C)
Lowest value of test series 1:	355
Lowest value of test series 2:	362
Lowest value of test series 3:	354
Lowest value of test series 4:	365
Lowest value of all test series :	354
Absolute deviation of the lowest value (1.5%)	5.3
Auto-ignition temperature	349

 

Conclusions:

An auto-ignition temperature of 349°C at 959 to 971 hPa has been determined for the substance using an appropriate test method. The result is considered reliable.

Description of key information

Auto-ignition temperature: 349°C at 959 - 971 hPa (DIN 14522, Method S)

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

349 °C

Additional information

Two reliable auto-ignition temperature studies are available for trichloro(propyl)silane. A measured auto-ignition temperature value of 349°C at 959 to 971 hPa was determined for the substance in accordance with DIN EN 14522, Method S and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable and is selected as key study.

The key study is supported by another measured auto-ignition temperature value of 360°C at 1013 hPa which was determined in accordance with ASTM E659 -78 test method but not in compliance with GLP.

In available secondary sources to which reliability could not be assigned, auto-ignition temperature value of 355°C at 1013 hPa was reported for the substance.