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Physical & Chemical properties

Storage stability and reactivity towards container material

Administrative data

Endpoint:
storage stability and reactivity towards container material
Type of information:
experimental study
Adequacy of study:
key study
Study period:
26 Apr. 1995
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, study report which meets basic scientific principles

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1995
Report Date:
1995

Materials and methods

Test guideline
Qualifier:
no guideline available
Principles of method if other than guideline:
The storage stability of six samples with different addings was determined by abiabatic warm storage test.
GLP compliance:
no
Type of method:
other: abiabatic warm storage test

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): Formamidinsulfinsäure
1) FAS-standard quality / Muster 1, (Ch. 2475, 2490, 2493 and 2494) date: 20.02.1995;
2) FAS- Kompaktat / Muster 2 date: 20.02.1995
3) FAS + 5% sugar / Muster 3 (Z5, Ch.94/2077) date: 20.02.1995
4) FAS + 0.2% Sipernat D17 / Muster 4 (based on Muster 1) date: 20.02.1995
5) FAS + 0.2% Aerosil R 812 / Muster 5 (based on Muster 1) date: 20.02.1995
6) FAS + 0.2% Sipernat 22S / Muster 7 (based on Muster 1) date: 20.02.1995

Results and discussion

Results:
All the tested samples show an abiabatic expansion.
The lowest composition heat flow was obtained from the samples with 5% sugar and 0.1% Sipernat D17.
Transformation products:
not measured

Any other information on results incl. tables

Sample

Standard

Kompaktat

5% Sugar

0.2% Sipernat D17

0.2% Aerosil R812

0.2% Sipernat 22S

Temperature (start) [°C]

22.6

22.9

22.7

22.8

20.9

25.9

Temperature (max.) [°C]

226.7

227.5

211.1

223.5

222.4

225.4

Heating rate [k/h]

0.19

0.27

0.37

0.26

0.21

0.175

(dT/dt)max[k/h]/ at …°C

4175/189.8

13940/176.5

848/202.7

20813/130

9097/134.1

4650/ 189

Specific heat*[J/g K]

1.08

1.08

1.08

1.08

1.08

1.08

Composition Heat flow at 65 °C [J/g h]

0.18

0.6

0.007

0.07

0.2

0.07

Regression range [°C]

60 – 70

53 - 68

61 - 73

63 - 71

58 - 71

58 - 66

Activation energy [kJ/mol]

623.1

342.2

401.5

519.5

539.7

510

*Due to small amount of addings in the FAS, specific heat was added.

Applicant's summary and conclusion