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EC number: 221-487-8 | CAS number: 3115-68-2
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Additional physico-chemical information
Administrative data
- Endpoint:
- other: corrosive to metals
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 30 October 2015-08 December 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP-compliant study in accordance with UN-MTC 37.4 (Test C.1).
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: UN no. ST/SG/AC.10/11/Rev.5: Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, Part III Section 37.4 “Test Methods for Corrosion to metals" (2009)
- Principles of method if other than guideline:
- UN MTC Section 37.4.1.1 -Test C.1 "Test for determining the corrosive properties of liquids and solids that may become liquid during transport as dangerous goods of Class 8, packing group III"
- GLP compliance:
- yes
Test material
- Reference substance name:
- Tetrabutylphosphonium bromide
- EC Number:
- 221-487-8
- EC Name:
- Tetrabutylphosphonium bromide
- Cas Number:
- 3115-68-2
- Molecular formula:
- C16H36P.Br
- IUPAC Name:
- tetrabutylphosphanium bromide
- Test material form:
- other: crystallized solid
- Details on test material:
- - Name of test material (as cited in study report): Tetrabutylphosphonium Bromide; CYPHOS® 442 Phosphonium Salt
- Physical state: Light orange crystallized solid
- Storage condition of test material: At room temperature, container flushed with nitrogen
- Other: hygroscopic
Constituent 1
Results and discussion
- Results:
- Uniform corrosion
-The weight loss of the aluminum and steel plates was < 13.5% (i.e. equivalent to < 6.25 mm/year corrosion rate); according to the guidelines, the test for uniform corrosion was negative.
-Although minimal weight losses of the metals was obtained it was visually observed that the metal plates reacted due to contact with the test item. With the aluminium plates a dark grey residue on the plates was observed. With the steel plates a brown residue was observed on the plates and on the bottom of the glass receptacles.
Localized corrosion
-The mean depth of the deepest hole of the aluminium plate was > 120 µm. According to the guidelines, the test for localized corrosion on aluminium was positive.
-Localized corrosion was observed on one aluminium and one steel plate (specimen 2). The depth of the deepest hole obtained with specimen 2 was measured in ten-fold using a Surface Profile Gauge (PCWI International, Cardiff, Australia).
Any other information on results incl. tables
Table: Uniform corrosion - weight loss of aluminum plates
|
Specimen 1 |
Specimen 2 |
Specimen 3 |
Reference plate |
|
|
|
|
|
Weight of the plate at the start of the test |
5.4719 |
5.3969 |
5.4797 |
- |
|
|
|
|
|
Weight of the plate at the end of the test after removal of corrosion products using pickling solution |
5.4581 |
5.3865 |
5.4783 |
- |
|
|
|
|
|
Weight of the reference plate before treatment pickling solution |
- |
- |
- |
5.4130 |
|
|
|
|
|
Weight of the reference plate after treatment pickling solution |
- |
- |
- |
5.4111 |
|
|
|
|
|
Weight loss [%] |
0.22 |
0.16 |
-0.01 |
- |
Table: Uniform corrosion - weight loss of steel plates
|
Specimen 1 |
Specimen 2 |
Specimen 3 |
Reference plate |
|
|
|
|
|
Weight of the plate at the start of the test |
15.0927 |
15.1506 |
15.0830 |
- |
|
|
|
|
|
Weight of the plate at the end of the test after removal of corrosion products using pickling solution |
15.0290 |
15.0371 |
15.0685 |
- |
|
|
|
|
|
Weight of the reference plate before treatment pickling solution |
- |
- |
- |
14.8535 |
|
|
|
|
|
Weight of the reference plate after treatment pickling solution |
- |
- |
- |
14.8511 |
|
|
|
|
|
Weight loss [%] |
0.41 |
0.73 |
0.08 |
- |
Table: Localized corrosion−depth of the deepest hole of aluminium plates (specimen 2)
Depth [μm] |
Mean depth [μm] |
Coefficient of variation [%] |
|
|
|
137 |
134 |
3.2 |
131 |
|
|
130 |
|
|
134 |
|
|
136 |
|
|
131 |
|
|
135 |
|
|
144 |
|
|
132 |
|
|
130 |
|
|
Table:Localized corrosion−depth of the deepest hole of steel plates (specimen 2)
Depth [μm] |
Mean depth [μm] |
Coefficient of variation [%] |
|
|
|
53 |
63 |
12.9 |
58 |
|
|
63 |
|
|
51 |
|
|
57 |
|
|
74 |
|
|
69 |
|
|
64 |
|
|
73 |
|
|
69 |
|
|
|
|
|
Applicant's summary and conclusion
- Conclusions:
- Because localized corrosion was observed with the aluminium plate placed in the half in/half above the test solution with the depth of the deepest hole was ≥ 120 µm, the test substance is considered to be corrosive to aluminium to the criterion for localized corrosion.
- Executive summary:
The corrosion to metals was determined at 55°C and a 7-day test period using 2 mm aluminium and steel plates in a GLP-compliant study performed in accordance with UN-MTC Section 37.4 (Test C.1). The solid test substance was dissolved in water; the test concentration was 1 g/L.
-All weight losses were < 13.5% (i.e. equivalent to 6.25 mm/year corrosion rate).
-Localized corrosion was observed with the aluminium plate placed in the half in/half above the test solution. The depth of the deepest hole was ≥ 120 µm.
The test substance is considered to be corrosive to aluminium to the criterion for localized corrosion. Based on this, the substance was CLP classified as 'corrosive to metals'.
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