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Physical & Chemical properties

Storage stability and reactivity towards container material

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Reference
Endpoint:
storage stability and reactivity towards container material
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2015
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
according to guideline
Guideline:
other: `Recommendations on the Transport of Dangerous Goods ¿ Manual of Tests and Criteria¿ (fifth revised edition, 2009) section 37.4 ¿Test methods for corrosion to metals¿ Test C.1
Deviations:
no
GLP compliance:
no
Type of method:
testing for reactivity towards container material
Specific details on test material used for the study:
TEST PROCEDURE AND CONDTIONS:
- Sheets: Metal plates: of aluminium (material number 3.4365) and steel (material number 1.0037), 50 mm length, 20 mm width and 2 mm thickness
- Preparation of the metal sheets: polished with grinding paper of 120 grits and subsequently degreased
- Number of plates for each test: 3 (one submerged into the solution, another one only half way and a third one was hung in the gas phase)
- The mass loss of the three metal plates was determined by weighing
- Apparatus: Glass-double-jacket-container
- Temperature: 55 °C
- Loading Time: 7 days
- Gas Phase: Static air
Transformation products:
no
Storage stability / reactivity towards container material:
other: No localised corrosion

The corrosion rate of the test item with steel or with aluminium was < 6.25 mm/year. No localised corrosion was observed by visual inspection.

Conclusions:
Pentanoic anhydride is in the sense of UN 37.4 (C.1 Test) not corrosive to steel and not corrosive to aluminium.
Executive summary:

According to UN 37.4 (C.1 Test), the corrosion rate of pentanoic anhydride with steel or with aluminium is < 6.25 mm/year. No localised corrosion was observed by visual inspection. Heptanoic anhydride is in the sense of UN 37.4 (C.1 Test) not corrosive to steel and not corrosive to aluminium.

Description of key information

Pentanoic anhydride is in the sense of UN 37.4 (C.1 Test) not corrosive to steel and not corrosive to aluminium.

Additional information