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EC number: 235-166-5 | CAS number: 12108-13-3
- 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
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- No data
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Principles of method if other than guideline:
- Information on the methodology used is described on "Any other information on results incl. tables".
- GLP compliance:
- no
- Remarks:
- Study report prior to GLP guidelines
- Type of method:
- flask method
- Key result
- Water solubility:
- ca. 10 mg/L
- Conc. based on:
- test mat.
- Temp.:
- 22 °C
- Remarks on result:
- other: no pH data
- Details on results:
- See 'any other information on results incl. tables.'
- Conclusions:
- Interpretation of results (migrated information): slightly soluble (0.1-100 mg/L)
The solubility of mmt in water at 22 ºC is 10±2 mg/L. - Executive summary:
The solubility of mmt in water, at room temperature, is 10 ± 2 mg/l. The experiments, conducted to determine the solubility in water demonstrated that mmt is easily lost from water when agitated and stirred. A method was found to maintain the mmt in aqueous solution sufficient to generate a reliable value for its solubility in water. The concentration of mmt was analysed by atomic absorption in order to determine inorganic manganese. If mmt degraded to inorganic Mn, mainly caused by exposure to light, this could lead to an erroneously elevated result. Therefore analysis by IR was used to confirm the concentration of mmt.
Reference
Table 1 – mmt content of stirred light-exposed solution
Time, hours |
Comments |
mmt (mg/l) |
|
AA |
IR |
||
1 |
Stirred |
13 |
|
24 |
Stirred |
16 |
|
42 |
Stirred, light exposed |
18 |
11 |
114 |
Stirred, light exposed |
30 |
10 |
162 |
Stirred, light exposed |
36 |
|
162 |
Stirred, light exposed filtered |
23 |
|
186 |
Stirred, light exposed |
43 |
|
186 |
Stirred, light exposed centrifuged |
42 |
|
210 |
Stirred, light exposed |
55 |
|
210 |
Stirred, light exposed centrifuged |
53 |
|
210 |
Stirred, light exposed filtered |
39 |
|
Table 2 – mmt of light protected, unstirred solution
Time, hours |
Comment |
mmt (ppm) |
|
AA |
IR |
||
24 |
Filtered |
11 |
|
104 |
|
8 |
|
104 |
Filtered |
6.5 |
|
104 |
Centrifuged |
6.5 |
|
200 |
|
9 |
4.6 |
200 |
Filtered |
7 |
|
Table 3 – Loss of mmt from unstirred solutions (concentrations in ppm)
Time, hrs |
Saturated |
Half-saturated |
||
AA |
IR |
AA |
IR |
|
0 |
13.8 |
8.8 |
6.8 |
4.4 |
24 |
11.1 |
6.3 |
3.8 |
2.3 |
96 |
3.4 |
2.4 |
0.9 |
0.7 |
120 |
1.4 |
1.5 |
0.5 |
0.6 |
192 |
0.5 |
<0.4 |
<0.5 |
<0.4 |
Table 4 – mmt content of light-protected solution with an excess of mmt
Time, hours |
Comments |
AA |
IR |
||
Stirred |
Unstirred |
Stirred |
Unstirred |
||
0 |
|
5.1 |
8.8 |
|
|
3.5 |
|
39.9 |
8.5 |
|
|
45 |
|
23.2 |
10.1 |
15 |
6 |
120 |
|
21.6 |
11.2 |
|
|
148 |
|
16.4 |
|
|
|
148 |
Filtered |
14.8 |
9.8 |
10 |
|
148 |
Filtered |
|
7.6 |
|
5 |
The stirred sample eventually lost all of the excess mmt. The unstirred sample appeared to have lost very little by the time the mmt in the stirred sample disappeared. This indicated the agitation increases the contact between the mmt vapor and air causing a more rapid faster (2x) loss.
A similar experiment where the solution was stirred for two hours and allowed to sit for 2 hours was also performed. It was sampled and analysed. It was then allowed to sit for 70 hrs. Samples were again taken and analysed (results in Table 5).
Table 5 – mmt content of unstirred solution after initial stirring
Time, hours |
mmt (ppm) |
|
AA |
IR |
|
0 |
7.5 |
7.5 |
70 |
8.7 |
5.7 |
Description of key information
Key value for chemical safety assessment
- Water solubility:
- 10 mg/L
- at the temperature of:
- 22 °C
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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