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EC number: 288-752-8 | CAS number: 85895-78-9
- 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
Viscosity
Administrative data
Link to relevant study record(s)
- Endpoint:
- viscosity
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- For details and justification of read-across please refer to the read-across report attached to IUCLID section 13.
- Reason / purpose for cross-reference:
- read-across source
- Key result
- Temp.:
- other: 25 °C
- Parameter:
- dynamic viscosity (in mPa s)
- Value:
- 33.46
- Remarks on result:
- other: Dynamic viscosity for 70 % (w/w) aqueous solution.
- Conclusions:
- The dynamic viscosities of different concentrated aqueous solutions of potassium lactate were determined by the capillary method:
1 % (w/w) potassium lactate in water: η = 0.9 mPa × s;
2 % (w/w) potassium lactate in water: η = 1 mPa × s;
5 % (w/w) potassium lactate in water: η = 1 mPa × s;
10 % (w/w) potassium lactate in water: η = 1.1 mPa × s;
20 % (w/w) potassium lactate in water: η = 1.5 mPa × s;
30 % (w/w) potassium lactate in water: η = 2.1 mPa × s;
40 % (w/w) potassium lactate in water: η = 3.3 mPa × s;
50 % (w/w) potassium lactate in water: η = 5.5 mPa × s;
60 % (w/w) potassium lactate in water: η = 11.3 mPa × s;
70 % (w/w) potassium lactate in water: η = 33.5 mPa × s. - Executive summary:
In this experimental study, which is comparable to an OECD 114 study (capillary method), the dynamic viscosities of different aqueous solutions of potassium lactate were determined. Crystalline potassium lactate is hygroscopic and extremely difficult to isolate, thus only manufactured and marketed as a concentrated aqueous solution. Consequently, the following dynamic viscosities for the different potassium lactate concentrations in water were determined at 25°C:
The dynamic viscosities of different concentrated aqueous solutions of potassium lactate were determined by the capillary method:
1 % (w/w) potassium lactate in water: η = 0.9 mPa × s;
2 % (w/w) potassium lactate in water: η = 1 mPa × s;
5 % (w/w) potassium lactate in water: η = 1 mPa × s;
10 % (w/w) potassium lactate in water: η = 1.1 mPa × s;
20 % (w/w) potassium lactate in water: η = 1.5 mPa × s;
30 % (w/w) potassium lactate in water: η = 2.1 mPa × s;
40 % (w/w) potassium lactate in water: η = 3.3 mPa × s;
50 % (w/w) potassium lactate in water: η = 5.5 mPa × s;
60 % (w/w) potassium lactate in water: η = 11.3 mPa × s;
70 % (w/w) potassium lactate in water: η = 33.5 mPa × s.
This information is used in a read-across approach in the assessment of the target substance. For justification of read-across please refer to the read-across report attached to IUCLID section 13.
- Endpoint:
- viscosity
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is a solid
Referenceopen allclose all
Additional aqueous solutions of potassium lactate investigated:
% (w/w) potassium lactate | dynamic viscosity [mPa*s] |
1% | 0.9 |
2% | 1 |
5% | 1 |
10% | 1.1 |
20% | 1.5 |
30% | 2.1 |
40% | 3.3 |
50% | 5.5 |
60% | 11.3 |
Description of key information
In this experimental study, which is comparable to an OECD 114 (capillary method), the dynamic viscosities of different aqueous solutions of potassium lactate have been determined. Crystalline potassium lactate is hygroscopic and extremely difficult to isolate, thus only manufactured and marketed as a concentrated aqueous solution.
As a result the following dynamic viscosities for the different potassium lactate concentrations in water have been determined at 25 °C:
1 % (w/w) potassium lactate in water: η = 0.9 mPa*s;
2 % (w/w) potassium lactate in water: η = 1 mPa*s;
5 % (w/w) potassium lactate in water: η = 1 mPa*s;
10 % (w/w) potassium lactate in water: η = 1.1 mPa*s;
20 % (w/w) potassium lactate in water: η = 1.5 mPa*s;
30 % (w/w) potassium lactate in water: η = 2.1 mPa*s;
40 % (w/w) potassium lactate in water: η = 3.3 mPa*s;
50 % (w/w) potassium lactate in water: η = 5.5 mPa*s;
60 % (w/w) potassium lactate in water: η = 11.3 mPa*s;
70 % (w/w) potassium lactate in water: η = 33.5 mPa*s.
The aqueous Potassium-(S)-lactate solution placed on the market has a concentration of approximately 60–78 % (w/w). Derived from the results mentioned above, the dynamic viscosity of an aqueous solution of the target substance in this concentration range is approximately the same. Futhermore, derived from an extrapolation approach, it can be stated that higher concentrated solutions have higher dynamic viscosities.
Key value for chemical safety assessment
- Viscosity:
- 33.46 mPa · s (dynamic)
- at the temperature of:
- 25 °C
Additional information
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