Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 205-440-9 | CAS number: 140-90-9
- 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
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: inherent biodegradability
- Type of information:
- other: published data
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Justification for type of information:
- The SEX , the subject of this dossier) is expected to exhibit very similar toxicity to Potassium isobutyl xanthate (CAS No.13001-46-2), which is also xanthate compound. Comparable metabolism would occur.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
- GLP compliance:
- not specified
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, adapted
- Details on inoculum:
- The inoculum used was activated sludge from a semi-continuous colony maintained in the laboratory.
Incubation was carried out at 25°C in 200 ml Erlenmeyer flasks containing 5 ul of a alcohol and 100 ml of culture medium.
Biodegradation rate constant was determined by measurement ofthe alcohol concentration in the supernatant of the culture
by gas chromatography. - Duration of test (contact time):
- 28 d
- Initial conc.:
- 20 mg/L
- Based on:
- test mat.
- Reference substance:
- not specified
- Value:
- 98
- Sampling time:
- 12 d
- Value:
- 30
- Sampling time:
- 3 h
- Value:
- 75
- Sampling time:
- 5 d
- Details on results:
- The IUCLID datasheet describes an aerobic biodegradation test for potassium isobutyl xanthate following the OECD Guide-line 302B “Inherent biodegradability: Modified Zahn-Wellens Test”. The results showed degradation of 98% after 12 days, with approximately 30% after 3 h and 75% after 5 days.
These results suggest that potassium isobutyl xanthate will be inherently biodegradable and it is not expected to persist in the environment. - Validity criteria fulfilled:
- not specified
- Interpretation of results:
- inherently biodegradable
- Conclusions:
- - The SEX , the subject of this dossier) is expected to exhibit very similar toxicity to Potassium isobutyl xanthate (CAS No.13001-46-2), which is also xanthate compound. Comparable metabolism would occur. The IUCLID datasheet describes an aerobic biodegradation test for potassium isobutyl xanthate following the OECD Guide-line 302B “Inherent biodegradability: Modified Zahn-Wellens Test”. The results showed degradation of 98% after 12 days, with approximately 30% after 3 h and 75% after 5 days. These results suggest that potassium isobutyl xanthate will be inherently biodegradable and it is not expected to persist in the environment.
- Executive summary:
- The Reaction mass of SEX, the subject of this dossier) is expected to exhibit very similar toxicity to Potassium isobutyl xanthate (CAS No.13001-46-2), which is also xanthate compound. Comparable metabolism would occur. The IUCLID datasheet describes an aerobic biodegradation test for potassium isobutyl xanthate following the OECD Guide-line 302B “Inherent biodegradability: Modified Zahn-Wellens Test”. The results showed degradation of 98% after 12 days, with approximately 30% after 3 h and 75% after 5 days.
These results suggest that potassium isobutyl xanthate will be inherently biodegradable and it is not expected to persist in the environment.
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- other: published data
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Justification for type of information:
- SEX readily decomposes to carbon disulphide, especially in the presence of moisture/water. Therefore, the Biodegradation in water of carbon disulphide (CS2) need to be considered in the assessment of SEX . Well Study performed.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- Deviations:
- yes
- Remarks:
- activated sludge was used as an inoculum
- GLP compliance:
- yes
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, non-adapted
- Details on inoculum:
- The activated sludge was preconditioned to reduce the endogenous respiration rates. To this end the sludge (200 mgdry weight) was aerated for one week. The sludge was diluted to a concentration of 2 mg dry weight/l in the bottles.
- Duration of test (contact time):
- 28 d
- Initial conc.:
- ca. 5 mg/L
- Based on:
- DOC
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- study was conducted according to OECD no 301 D guideline with a slight modification, described under details of inoculum
- Reference substance:
- acetic acid, sodium salt
- Parameter:
- % degradation (DOC removal)
- Value:
- > 80
- Sampling time:
- 1 wk
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- The biodegradation of CS2 was >80 % after 28 days of exposure, therefore CS2 is readily biodegradable.
Sodium ethyl xanthate readily decomposes to carbon disulphide, especially in the presence of moisture/water. Therefore, the Biodegradation in water of carbon disulphide (CS2) need to be considered in the assessment of Sodium ethyl xanthate.
These results suggest that Sodium ethyl xanthate will be readily biodegradable and it is not expected to persist in the environment. - Executive summary:
The biodegradation of CS2 was >80 % after 28 days of exposure, therefore CS2 is readily biodegradable.
Reaction mass of SEX readily decomposes to carbon disulphide, especially in the presence of moisture/water. Therefore, the Biodegradation in water of carbon disulphide (CS2) need to be considered in the assessment of SEX.
These results suggest that SEX will be readily biodegradable and it is not expected to persist in the environment.
- Endpoint:
- biodegradation in water: ready biodegradability
- Data waiving:
- other justification
- Justification for data waiving:
- other:
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Justification for type of information:
- A sufficiently well reported study to be able to judge result as reliable. This study examined many chemicals and has been judged reliable by the OECD during the assessment of a number of chemical substances under the OECD HPV programme. Ethyl Alcohol (ethanol) is both reagents used in the manufacture, as well as decomposition products of xanthates. Therefore, the Biodegradation in water of Ethyl Alcohol need to be considered in the assessment of SEX .
- Qualifier:
- according to guideline
- Guideline:
- other: see 'principles of method'
- Principles of method if other than guideline:
- Test carried out to the guideline: BOD (Standard methods for the examination of water and waste water 1971. 13th ed, American Public Health Assoc, NY. Test based on measuring dissolved oxygen concentration changes.
- GLP compliance:
- not specified
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- - Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): no data
- Water filtered: yes
- Type and size of filter used, if any: glass wool - Duration of test (contact time):
- ca. 20 d
- Initial conc.:
- ca. 3 mg/L
- Based on:
- test mat.
- Initial conc.:
- ca. 7 mg/L
- Based on:
- test mat.
- Initial conc.:
- ca. 10 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- O2 consumption
- Reference substance:
- acetic acid, sodium salt
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 74
- Sampling time:
- 5 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 74
- Sampling time:
- 10 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 95
- Sampling time:
- 15 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 84
- Sampling time:
- 20 d
- Parameter:
- COD
- Value:
- 1.99 g O2/g test mat.
- Results with reference substance:
- 5 day: 76%, 10 day: 82%, 20 day: 96% degradation
- Validity criteria fulfilled:
- yes
- Remarks:
- reference material showed degradability
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Since the degradation exceeded 60% within 10 days, the substance meets the criteria for classification as readily biodegradable.
The biodegradation of Ethyl Alcohol was >60 % after 10 days of exposure, therefore Ethyl Alcohol is readily biodegradable.SEX readily decomposes to ethyl Alcohol, especially in the presence of moisture/water. Ethyl Alcohol is both reagents used in the manufacture, as well as decomposition products.
Therefore, the Biodegradation in water of Ethyl Alcohol need to be considered in the assessment of SEX. These results suggest that SEX will be readily biodegradable and it is not expected to persist in the environment. - Executive summary:
The biodegradation of ethanol was assessed at a number of concentrations using a non-adapted domestic sewage innoculum in a freshwater medium using a 20 day study.. Rapid degradation was observed. Based on the results of this study, ethanol meets the criteria to be classified as readily biodegradable. This study is classified as acceptable and satisfies the guideline requirement for a ready biodegradation study.
Results synopsis BOD5=74%, BOD15=95%.
Referenceopen allclose all
This study shows that CS2 is readily biodegradable.
Measured COD is 95% of theoretical value.
Description of key information
When water is added to SEX it reacts with water to form the others substances: alcohol, sodium carbonate, trithiocarbonate and carbon disulphide.
Carbon disulphide (CAS number 75–15–0) it is the major decomposition product, which is liquid and have to be considered.
The biodegradation of CS2 was >80 % after 28 days of exposure, therefore CS2 is readily biodegradable. SEX readily decomposes to carbon disulphide, especially in the presence of moisture/water.
Therefore, the Biodegradation in water of carbon disulphide (CS2) need to be considered in the assessment of SEX.
The biodegradation of Ethyl Alcohol was >60 % after 10 days of exposure, therefore Ethyl Alcohol is readily biodegradable. SEX readily decomposes to ethyl Alcohol, especially in the presence of moisture/water. Ethyl Alcohol is both reagents used in the manufacture, as well as decomposition products.
Therefore, the Biodegradation in water of Ethyl Alcohol need to be considered in the assessment of SEX. These results suggest that SEX will be readily biodegradable and it is not expected to persist in the environment.
These results suggest that SEX will be readily biodegradable and it is not expected to persist in the environment.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
When water is added to SEX it reacts with water to form the others substances: alcohol, sodium carbonate, trithiocarbonate and carbon disulphide.
Carbon disulphide (CAS number 75–15–0) it is the major decomposition product, which is liquid and have to be considered.
The biodegradation of CS2 was >80 % after 28 days of exposure, therefore CS2 is readily biodegradable. SEX readily decomposes to carbon disulphide, especially in the presence of moisture/water.
Therefore, the Biodegradation in water of carbon disulphide (CS2) need to be considered in the assessment of SEX.
The biodegradation of Ethyl Alcohol was >60 % after 10 days of exposure, therefore Ethyl Alcohol is readily biodegradable. SEX readily decomposes to ethyl Alcohol, especially in the presence of moisture/water. Ethyl Alcohol is both reagents used in the manufacture, as well as decomposition products.
Therefore, the Biodegradation in water of Ethyl Alcohol need to be considered in the assessment of SEX. These results suggest that SEX will be readily biodegradable and it is not expected to persist in the environment.
These results suggest that SEX will be readily biodegradable and it is not expected to persist in the environment.
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.