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EC number: 202-969-7 | CAS number: 101-72-4
- 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

Endpoint summary
Administrative data
Description of key information
Key value for chemical safety assessment
Skin sensitisation
Endpoint conclusion
- Endpoint conclusion:
- adverse effect observed (sensitising)
- Additional information:
Non-human information
The skin sensitizing potential of IPPD was evaluated with the guinea pig maximization test. For induction treatment groups of 20 female guinea pigs were intradermally injected with 0.5 % IPPD in olive oil with complete FCA followed one week later by cutaneous application of 1 % IPPD in petrolatum. According to the grading system of Magnusson and Kligman 10 and 70 %, respectively, of the guinea pigs challenged by epicutaneous application of 0.05 and 0.5 % IPPD in petrolatum reacted positive. The sensitizing potential was classified as low for the 0.05 % and high for the 0.5 % challenge concentration. 90 % of animals sensitized to IPPD showed cross-sensitization to 0.05 % N-phenyl-N' cyclohexyl-p-phenylenediamine (CPPD) in vaseline. Animals sensitized to p-phenylenediamine (PPD) or to N-1,3-dimethylbutyl-N'-phenyl-p-phenylenediamine (6PPD) showed also cross-sensitization to IPPD (Herve-Bazin 1977).
The skin sensitizing potential of IPPD was confirmed in a more recent guinea pig maximization test and local lymph node assay (Yamano 2009). Female Hartley guinea pigs challenged with 50 ppm (0.005%) and 5000 ppm (0.5%) IPPD showed positive skin reactions (4/4). Moreover, female BALB/c mice treated with IPPD showed a significant increase in the Stimulation Index (SI: 1.3, 1.68, 3.23, 3.99, at 0.01%, 0.03%, 0.1 % and 0.3 %, respectively) at a non-irritant dose-range and thus was considered to be a positive skin sensitizer in the local lymph node assay.
In addition, the positive response of IPPD was confirmed in another local lymph node assay (Ikarashi 1993). IPPD induced an increase in the stimulation index of 3.85 at a concentration of 0.5%.
Human information
The skin sensitizing potential of IPPD was evaluated in several Repeated Insult Patch tests with human volunteers. IPPD applied 50 % w/v in dimethylphthalate on the upper arm of 50 volunteers induced visible skin changes in 11 of 50 individuals (Monsanto Co. 1976). In another Repeated Insult Patch test, performed with 1 % IPPD in petrolatum, 12 subjects of 82 patched volunteers were deemed to be sensitized (Monsanto Co. 1978).
In addition, a number of publications have reported patients who show a positive reaction when patch tested with IPPD (for review see OECD SIDS 2000).
Migrated from Short description of key information:
The skin sensitisation potential of IPPD was evaluated in guinea pigs, mice and in studies with human volunteers. IPPD was sensitizing in guinea pigs and mice and was found to induce dermal sensitizing in humans; in consequence, existing classification with R 43/skin sensitizer category 1 is confirmed. According to criteria published in REACH guidance document chapter R. 8, IPPD was categorised as strong skin sensitizer.
Justification for classification or non-classification
The test substance IPPD is classified as skin sensitizer according to regulation no. 1272/2008 (GHS).
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