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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
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EC number: 208-754-4 | CAS number: 540-72-7
- 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
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Endpoint summary
Administrative data
Description of key information
Additional information
A wide range of microorganisms degrade thiocyanates utilizing these compounds as energy, nitrogen or sulfur source. Due to the action of microorganisms, the required pass levels are achieved in prescribed tests for thiocyanate to allow a ready biodegradability classification. Ready biodegradable compounds can be treated in biological systems as demonstrated and will be degraded very rapidly in ecosystems. Environmental concentrations of thiocyanate are therefore significantly reduced by biodegradation.
Sodium, ammonium and potassium thiocyanate are salts that readily dissolve in water, and completely dissociate into their separate ions at all pH values (1 -14), and thus will have no tendency to hydrolyze. Degradation of the thiocyanates through hydrolysis is therefore not considered.
Direct photolysis of the three thiocyanates inair/water/soil will not occur, because they do not absorb UV radiation above 290 nm. Photo transformation in air/water/soil is therefore assumed to be negligible.
All the three thiocyanate compounds have negative log Kow values. Using the thiocyanic acid (HSCN) as a worst case scenario, the estimated log Kow value of 0.58 still falls short of the cut-off value of 3, thus no further data requirement for thiocyanates with respect to bioaccumulation are necessary.
Ammonium thiocyanate as a representative member of the category is readily biodegradable according to the results of an OECD 301D test. The thiocyanates in this category all have estimated log Kow values less than zero, indicating a low potential for adsorption. However, SCN- can adsorb to soils with a large anion exchange capacity (Fe, Al and Mn oxides, clay minerals), especially at high temperatures. The surfaces of most soil particles have low anion exchange capacity, thus this mechanism would be of minor relevance.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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