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EC number: 210-441-2 | CAS number: 615-66-7
- 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
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- (Q)SAR
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
- Justification for type of information:
- The supporting QMRF report has been attached
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- The prediction is done using QSAR Toolbox version 3.3 with respect to the descriptor log Kow.
- GLP compliance:
- not specified
- Analytical monitoring:
- not specified
- Vehicle:
- not specified
- Test organisms (species):
- Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
- Test type:
- static
- Water media type:
- freshwater
- Total exposure duration:
- 72 h
- Test temperature:
- 25 degC
- Reference substance (positive control):
- not specified
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 110.65 mg/L
- Nominal / measured:
- estimated
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Validity criteria fulfilled:
- not specified
- Conclusions:
- A study was predicted using OECD QSAR toolbox version 3.3 (2017), to assess the toxicity effect of 2-chloro-p-phenylenediamine on algae in a 96 hours of exposure. The median effective concentration (EC50) for the test substance, 2-chloro-p-phenylenediamine, in algae (Desmodesmus subspicatus) on a growth rate effect was estimated to be 110.65 mg/L in a 72 hour study.
- Executive summary:
A study was predicted using OECD QSAR toolbox version 3.3 (2017), to assess the toxicity effect of 2-chloro-p-phenylenediamine on algae in a 96 hours of exposure. The median effective concentration (EC50) for the test substance, 2-chloro-p-phenylenediamine, in algae (Desmodesmus subspicatus) on a growth rate effect was estimated to be 110.65 mg/L in a 72 hour study. Thus on the basis of EC50 value and by considering the CLP criteria for aquatic classification of the substance, it is concluded that the substance ‘2-chloro-p-phenylenediamine (CAS No. 615-66-7)’ does not exhibit toxicity to aquatic algae.
Reference
The
prediction was based on dataset comprised from the following
descriptors: EC50
Estimation method: Takes average value from the 7 nearest neighbours
Domain logical expression:Result: In Domain
((((((((((("a"
or "b" or "c" or "d" or "e" )
and ("f"
and (
not "g")
)
)
and ("h"
and (
not "i")
)
)
and ("j"
and (
not "k")
)
)
and ("l"
and (
not "m")
)
)
and "n" )
and ("o"
and (
not "p")
)
)
and ("q"
and (
not "r")
)
)
and ("s"
and (
not "t")
)
)
and ("u"
and (
not "v")
)
)
and ("w"
and "x" )
)
Domain
logical expression index: "a"
Referential
boundary: The
target chemical should be classified as Anilines (Acute toxicity) by
US-EPA New Chemical Categories
Domain
logical expression index: "b"
Referential
boundary: The
target chemical should be classified as Radical AND Radical >> Radical
mechanism via ROS formation (indirect) AND Radical >> Radical mechanism
via ROS formation (indirect) >> Single-Ring Substituted Primary Aromatic
Amines AND SN1 AND SN1 >> Nucleophilic attack after metabolic nitrenium
ion formation AND SN1 >> Nucleophilic attack after metabolic nitrenium
ion formation >> Single-Ring Substituted Primary Aromatic Amines by DNA
binding by OASIS v.1.3
Domain
logical expression index: "c"
Referential
boundary: The
target chemical should be classified as SN1 AND SN1 >> Nitrenium Ion
formation AND SN1 >> Nitrenium Ion formation >> Primary aromatic amine
by DNA binding by OECD
Domain
logical expression index: "d"
Referential
boundary: The
target chemical should be classified as Weak binder, NH2 group by
Estrogen Receptor Binding
Domain
logical expression index: "e"
Referential
boundary: The
target chemical should be classified as Anilines (amino-para) AND
Anilines (Unhindered) by Aquatic toxicity classification by ECOSAR
Domain
logical expression index: "f"
Referential
boundary: The
target chemical should be classified as Not known precedent reproductive
and developmental toxic potential by DART scheme v.1.0
Domain
logical expression index: "g"
Referential
boundary: The
target chemical should be classified as Inorganic chemical OR Known
precedent reproductive and developmental toxic potential OR Metal atoms
were identified OR Non-steroid nucleus derived estrogen receptor (ER)
and androgen receptor (AR) OR Non-steroid nucleus derived estrogen
receptor (ER) and androgen receptor (AR) >> Other non-steroidal estrogen
receptor (ER) binding compounds (2b-2) OR Not covered by current version
of the decision tree OR Piperazine-, dioxane-, morpholine-,
tetrahydrothiopyran-like derivatives and cyclohexanamine (17c) OR
Toluene and small alkyl toluene derivatives (8a) by DART scheme v.1.0
Domain
logical expression index: "h"
Referential
boundary: The
target chemical should be classified as Halogens AND Non-Metals by
Groups of elements
Domain
logical expression index: "i"
Referential
boundary: The
target chemical should be classified as Alkali Earth by Groups of
elements
Domain
logical expression index: "j"
Referential
boundary: The
target chemical should be classified as Aminoaniline, para AND Aniline
AND Aryl AND Aryl halide AND Precursors quinoid compounds by Organic
Functional groups
Domain
logical expression index: "k"
Referential
boundary: The
target chemical should be classified as Phenol by Organic Functional
groups
Domain
logical expression index: "l"
Referential
boundary: The
target chemical should be classified as Aminoaniline, para AND Aniline
AND Aryl AND Aryl halide AND Precursors quinoid compounds by Organic
Functional groups
Domain
logical expression index: "m"
Referential
boundary: The
target chemical should be classified as Naphtalene OR Nitrobenzene by
Organic Functional groups
Domain
logical expression index: "n"
Referential
boundary: The
target chemical should be classified as Not calculated by Hydrolysis
half-life (Kb, pH 7)(Hydrowin) ONLY
Domain
logical expression index: "o"
Referential
boundary: The
target chemical should be classified as Aliphatic Nitrogen, one aromatic
attach [-N] AND Aromatic Carbon [C] AND Chlorine, aromatic attach [-Cl]
AND Chlorine, olefinic attach [-Cl] AND Olefinic carbon [=CH- or =C<] by
Organic functional groups (US EPA)
Domain
logical expression index: "p"
Referential
boundary: The
target chemical should be classified as Oxygen, one aromatic attach
[-O-] by Organic functional groups (US EPA)
Domain
logical expression index: "q"
Referential
boundary: The
target chemical should be classified as Aliphatic Nitrogen, one aromatic
attach [-N] AND Aromatic Carbon [C] AND Chlorine, aromatic attach [-Cl]
AND Chlorine, olefinic attach [-Cl] AND Olefinic carbon [=CH- or =C<] by
Organic functional groups (US EPA)
Domain
logical expression index: "r"
Referential
boundary: The
target chemical should be classified as Tertiary Carbon by Organic
functional groups (US EPA)
Domain
logical expression index: "s"
Referential
boundary: The
target chemical should be classified as Aliphatic Nitrogen, one aromatic
attach [-N] AND Aromatic Carbon [C] AND Chlorine, aromatic attach [-Cl]
AND Chlorine, olefinic attach [-Cl] AND Olefinic carbon [=CH- or =C<] by
Organic functional groups (US EPA)
Domain
logical expression index: "t"
Referential
boundary: The
target chemical should be classified as Fluorine, aliphatic attach [-F]
by Organic functional groups (US EPA)
Domain
logical expression index: "u"
Referential
boundary: The
target chemical should be classified as Amine AND Aromatic compound AND
Aryl chloride AND Aryl halide AND Halogen derivative AND Primary amine
AND Primary aromatic amine by Organic functional groups, Norbert Haider
(checkmol)
Domain
logical expression index: "v"
Referential
boundary: The
target chemical should be classified as Secondary amine by Organic
functional groups, Norbert Haider (checkmol)
Domain
logical expression index: "w"
Parametric
boundary:The
target chemical should have a value of log Kow which is >= -0.612
Domain
logical expression index: "x"
Parametric
boundary:The
target chemical should have a value of log Kow which is <= 1.14
Description of key information
A study was predicted using OECD QSAR toolbox version 3.3 (2017), to assess the toxicity effect of 2-chloro-p-phenylenediamine on algae in a 96 hours of exposure. The median effective concentration (EC50) for the test substance, 2-chloro-p-phenylenediamine, in algae (Desmodesmus subspicatus) on a growth rate effect was estimated to be 110.65 mg/L in a 72 hour study. Thus on the basis of EC50 value and by considering the CLP criteria for aquatic classification of the substance, it is concluded that the substance ‘2-chloro-p-phenylenediamine (CAS No. 615-66-7)’ does not exhibit toxicity to aquatic algae.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 110.65 mg/L
Additional information
Various studies including predicted results from the validated model and experimental study from a peer-reviewed journal for toxicity to aquatic algae with the target substance 2-chloro-p-phenylenediamine (CAS No. 615-66-7) and to its relevant read across substance 2-chloroaniline (CAS No. 95-51-2) by considering its structure-activity relationships, were summarized as follows:
A study was predicted using OECD QSAR toolbox version 3.3 (2017), to assess the toxicity effect of 2-chloro-p-phenylenediamine on algae in a 96 hours of exposure. The median effective concentration (EC50) for the test substance, 2-chloro-p-phenylenediamine, in algae (Desmodesmus subspicatus) on a growth rate effect was estimated to be 110.65 mg/L in a 72 hour study.
In addition, based on the Ecological Structure Activity Relationships (ECOSAR) Predictive Model version 1.11 (2017), the median effective concentration (EC50) for the test substance, 2-chloro-p-phenylenediamine, in a green algae was estimated to be 801.51 mg/L on the basis of growth rate effect in a 96 hour study.
Moreover, the test was carried out by Kuhn,R. et al. (Water Res.24(1): 31-38, 1990) on Scenedesmus subspicatus with the substance 2-chloroaniline (CAS No.- 95-51-2) in a 72 hours of exposure. The effective concentration to 50% of test organisms was determined. The median effective concentration (EC50) for the test substance, 2-chloroaniline, in aquatic green algae Scenedesmus subspicatus was determined to be 150.0 mg/L on the basis of population effect in a 72 hours study.
Based on the above predicted and experimental studies for target substance 2-chloro-p-phenylenediamine (CAS No. 615-66-7) and to its read across substance 2-chloroaniline (CAS No. 95-51-2), the effective concentration EC50 value was found to be in the range of 110.65 mg/L and 801.51 mg/L. Thus, on the basis of this EC50 value and according to CLP Criteria for aquatic classification of the substance, it is concluded that 2-chloro-p-phenylenediamine (CAS No. 615-66-7) does not exhibit toxicity to aquatic algae.
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