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Diss Factsheets
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EC number: 233-046-7 | CAS number: 10025-87-3
- 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
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
The halflife of phosphoryl trichloride in water at 23 °C is estimated to be less than 10 seconds.
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 10 s
- at the temperature of:
- 23 °C
Additional information
In water, phosphoryl trichloride hydrolyses to phosphoric acid and hydrochloric acid with t1/2 < 10 seconds (Hansel, 2004). Since hydrochloric acid is the major product formed in the ratio of 3:1 and it is the much stronger acid then all effects on pH are mainly caused by hydrochloric acid. Phosphoryl trichloride itself is not likely to result in environmental effects. For assessment of the environmental effects the focus should be on the major hydrolysis product, hydrochloric acid.
The kinetics of phosphoryl trichloride hydrolysis was measured in dioxane solution containing 33 % water (Hudson and Mitchell, 1962). Initial hydrolysis of phosphoryl trichloride proceeds with a half life of ca. 0.01 seconds to phosphorodichloric acid and hydrochloric acid. The hydrolysis of phosphorodichloric is less rapid to give phosphoric acid. In a separate experiment, half life for the hydrolysis of phosphorodichloric acid was measured to be 250 seconds.
Rodriguez and Castro (1942) measured the hydrolysis rate constant, which had an average value of 45 s-1 at 20 °C and 89 s-1 at 35 °C.
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