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Diss Factsheets
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EC number: 201-196-2 | CAS number: 79-33-4
- 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
Storage stability and reactivity towards container material
Administrative data
Link to relevant study record(s)
- Endpoint:
- storage stability and reactivity towards container material
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2007
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
- Principles of method if other than guideline:
- Sample was stored at 25 °C, 60% relative humitidy, for up to 60 months. Colour, lactic acid concentration, and level of heavy metals, iron, chloride, sulfate and calcium were monitored during this time.
- GLP compliance:
- not specified
- Type of method:
- ambient testing
- Specific details on test material used for the study:
- Test was performed with an 80 % aqueous solution of L-lactic acid.
- Results:
- Lactic acid solutions stored at ambient temperature in polyethylene containers are stable for at least 5 years, with no change in concentration.
- Transformation products:
- no
- Storage stability / reactivity towards container material:
- other: no reactivity towards container material.
- Conclusions:
- L-lactic acid in polyethylene containers is stable for at least 5 years when stored at ambient conditions. There is no risk for reactivity of lactic acid towards the container material.
- Executive summary:
L-lactic acid was exposed to "stressed" conditions, to investigate their effects on the stability of the acid, with regard to the formation of degradation products. When summarizing the results of the stress-testing experiments we can conclude that L-lactic acid is a stable product under most conditions tested. Only when exposed to hydrogen peroxide some oxidation occurs to acetaldehyde, pyruvic acid, acetic acid, formic acid and COX. Furthermore it is known from literature that lactic acid can decompose to acetaldehyde, formic acid and / or carbon monoxide on reaction with an excess of concentrated sulfuric acid (at room temperature) or with an excess of diluted sulfuric acid at 130 °C.
Reference
Description of key information
The stability data demonstrated that L-lactic acid is very high at ambient conditions of 25 °C. A stability period of at least 5 years is justified.
Additional information
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