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Diss Factsheets

Physical & Chemical properties

Stability: thermal, sunlight, metals

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Endpoint:
stability: thermal, sunlight, metals, other
Remarks:
Migrated from section 'Stability: thermal, sunlight, metals'
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010-06-08 to 2010-06-22
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Comparable to guideline study with acceptable restrictions
Qualifier:
equivalent or similar to guideline
Guideline:
other: UN Transport Test C.1
Deviations:
yes
Remarks:
worldwide shortage of metal strips of the required specification prevented correct performance of the study
GLP compliance:
no
Test substance thermally stable:
not determined
Sublimation:
not determined
Transformation products:
not specified
Test substance stable to sunlight:
not determined
Test substance stable to metals / metal ions:
yes

The weight of the metal strip was the same before and after immersion in the liquid test material and no evidence of corrosion was found (see table below).

SUMMARY OF IMMERSION TEST RESULTS

Test Piece

Al-Zn-Mg-Cu (A7075P)

Test Piece Number

A7 1

Immersion liquid

MXDA

Penetration (mm/year)

0.0000

Class

AA

Corrosion Pattern

No corrosion

Test piece size

Length

49.28 mm

 

Width

19.45 mm

 

Height

2.96 mm

Surface Area

2324 mm2

Density

2.80 g/cm3

Weight before test

8.03640 g

Weight after test

8.03640 g

Reduction in weight during test

0.00000 g

Conclusions:
The test metal exhibited no sign of corrosion when exposed to m-phenylenebis(methylamine) over a period of 14 days at 55 degrees Centigrade
Endpoint:
stability: thermal, sunlight, metals, other
Remarks:
Migrated from section 'Stability: thermal, sunlight, metals'
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010-07-16 to 2010-07-30
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Comparable to guideline study with acceptable restrictions
Qualifier:
equivalent or similar to guideline
Guideline:
other: UN Transport Test C.1
Deviations:
yes
Remarks:
worldwide shortage of metal strips of the required specification prevented correct performance of the study
GLP compliance:
no
Test substance thermally stable:
not determined
Sublimation:
not determined
Transformation products:
not specified
Test substance stable to sunlight:
not determined
Test substance stable to metals / metal ions:
yes

The weight of the metal test strip was the same before and after immersion in the liquid test material and no significant evidence of corrosion was found (see table below).

SUMMARY OF IMMERSION TEST RESULTS

Test Material

S235JR

Test Piece Number

S231

Immersion liquid

MXDA

Penetration (mm/year)

0.0001

Class

AA

Corrosion Pattern

General corrosion

Test piece size

Length

49.56 mm

 

Width

19.21 mm

 

Height

2.94 mm

Surface Area

2308 mm2

Density

7.9 g/cm3

Weight before test

8.03640 g

Weight after test

8.03640 g

Reduction in weight during test

0.00004 g

Conclusions:
Penetration was determined to be 0.0001 mm/year when the test metal was immersed in m-phenylenebis(methylamine) over a period of 14 days at 55 degrees Centigrade

Description of key information

Not corrosive to aluminium alloy plate or steel plate

Additional information

The UN Transport test described in Part III, sub-section 37.4 has not been conducted as specified due to worldwide shortage of specific 2mm metal plates. However, the test method was negative for aluminium alloy plate and steel plate.

Justification for classification or non-classification

Recent investigations provide no evidence that the substance causes corrosion to aluminium alloy plate or steel plate. These data are supported by experience in use because an existing storage tank made of carbon steel (JIS SS400 (ex SS41)) equivalent to ASTM A283-Gr.D has not suffered major corrosion over a use period of 25 years. The latest annual inspection (July 2009) indicated that areas of corrosion no more than 0.5–1.0 mm in depth were present on the bottom plate but no evidence of corrosion was found on the sides of the tank. The calculated corrosion rate is calculated as 0.45 mm/year at 55 °C.