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Diss Factsheets
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EC number: 212-783-8 | CAS number: 868-85-9
- 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
Monitoring data
Administrative data
- Endpoint:
- monitoring data
- Type of information:
- other: OECD SIDS
- Adequacy of study:
- other information
- Reliability:
- other: OECD SIDS
- Rationale for reliability incl. deficiencies:
- other: No reliability is given as this is a summary entry for the OECD SIDS.
Data source
Referenceopen allclose all
- Reference Type:
- secondary source
- Title:
- Dimethyl phosphonate - CAS No: 868-85-9 - SIDS Initial Assessment Report.
- Author:
- OECD
- Year:
- 2 004
- Bibliographic source:
- UNEP Publications
- Reference Type:
- publication
- Title:
- Dimethyl hydrogen phosphite.
- Author:
- IARC
- Year:
- 1 990
- Bibliographic source:
- International Agency for Research on Cancer (ed.) IARC monographs on the evaluation of carcinogenic risks to humans some flame retardants and textile chemicals, and exposures in the textile manufacturing industry, Lyon , 21-28/02/1989, 48, 85¿93.
- Reference Type:
- publication
- Title:
- Microbial Metabolism and Enzymology of Selected Pesticides.
- Author:
- Munnecke DM, Johnson LM, Talbot HW and Barik S
- Year:
- 1 982
- Bibliographic source:
- Chakrabarty AM (ed) Biodegradation and Detoxification of Environmental Pollutants, CRC Press, Boca Raton, pp 1 - 32.
- Reference Type:
- publication
- Title:
- The toxicity of the hydrolysis and breakdown products of malathion to the fathead minnow.
- Author:
- Bender ME
- Year:
- 1 969
- Bibliographic source:
- Water Research b,571-582.
- Reference Type:
- publication
- Title:
- Fate of pesticides in the environment - a progress report.
- Author:
- Wilson BR
- Year:
- 1 966
- Bibliographic source:
- Trans New York Acad Sci 28 (6), 694 - 705.
Materials and methods
- Principles of method if other than guideline:
- OECD SIDS
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Dimethyl phosphonate
- EC Number:
- 212-783-8
- EC Name:
- Dimethyl phosphonate
- Cas Number:
- 868-85-9
- Molecular formula:
- C2H7O3P
- IUPAC Name:
- dimethyl phosphonate
Constituent 1
Results and discussion
Any other information on results incl. tables
OECDS SIDS (2004) - Environmental Monitoring:
There is no information on DMP concentrations in the environment.
IARC (1990) reports that DMP "is not known to occur as a natural product."
IARC (1990) also reports that DMP "is a degradation product of trichlorfon and malathion" (page 87 of IARC, 1990). Trichlorfon (dimethyl-p-(2,2,2-trichlor-1-hydroxyethyl)-phosphonate) contains a pentavalent phosphorous. Predicted from its chemical structure, the degradation of trichlorfon leads to inorganic phosphate. Malathion (O,O-dimethyl-S (1,2-dicarbethoxyethyl)-phosphorodithioate) is a phosphorodithionic acid derivative whose hydrolysis is thought to proceed to thiophosphates and (inorganic) phosphate (Munnecke et al. 1982). Intermediates of malathione hydrolysis are dimethyl phosphorothionic acid and dimethyl phosphorodithionic acid (Bender, 1969). Although it was stated by Wilson (1966) that DMP is a hydrolysis product of malathion, Bender (1969) made it clear that this was only a postulate.
Applicant's summary and conclusion
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.