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EC number: 234-319-3 | CAS number: 11097-59-9
Endpoint summary
Administrative data
Description of key information
Key value for chemical safety assessment
Skin sensitisation
Link to relevant study records
- Endpoint:
- skin sensitisation
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- Study performed in accordance with OECD guideline and in compliance with GLP guidelines. As the study is performed with a substance analogue, in accordance with REACH guidance the maximum reliability for read-across data is 2. Read-across is justified because of the similar chemical nature of the target substance compared to the analogues. The read-across rationale can be found in the analogue approach document attached in Section 13.
- Qualifier:
- according to guideline
- Guideline:
- other: EEC-Directive 92/69 B.6 Maximization method
- GLP compliance:
- yes
- Species:
- guinea pig
- Strain:
- Himalayan
- Sex:
- female
- Route:
- intradermal
- Vehicle:
- water
- Concentration / amount:
- Concentration of test material and vehicle used at induction:
Intradermal injection: 5% in distilled water
Epidermal application: 50% in distilled water
Concentration of test material and vehicle used for each challenge:
50% in distilled water - Route:
- epicutaneous, occlusive
- Vehicle:
- water
- Concentration / amount:
- Concentration of test material and vehicle used at induction:
Intradermal injection: 5% in distilled water
Epidermal application: 50% in distilled water
Concentration of test material and vehicle used for each challenge:
50% in distilled water - No. of animals per dose:
- Number of animals in test group: 10
Number of animals in negative control group: 5 - Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 50 %
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: 1st reading. . Hours after challenge: 24.0. Group: test group. Dose level: 50 %. No with. + reactions: 0.0. Total no. in groups: 10.0.
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 50 %
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: test group. Dose level: 50 %. No with. + reactions: 0.0. Total no. in groups: 10.0.
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- negative control
- Dose level:
- 50 %
- No. with + reactions:
- 0
- Total no. in group:
- 5
- Remarks on result:
- other: Reading: 1st reading. . Hours after challenge: 24.0. Group: negative control. Dose level: 50 %. No with. + reactions: 0.0. Total no. in groups: 5.0.
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- negative control
- Dose level:
- 50 %
- No. with + reactions:
- 0
- Total no. in group:
- 5
- Remarks on result:
- other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: negative control. Dose level: 50 %. No with. + reactions: 0.0. Total no. in groups: 5.0.
- Interpretation of results:
- not sensitising
- Remarks:
- Migrated information
Reference
Maximum concentration not causing irritating effects in preliminary test: 50 %
Signs of irritation during induction:
After intradermal injection:
On day 3 moderate/severe erythema (grade 1 or 2) was observed in all animals (experimental). On day 10 1/10
animals showed small scabs.
Evidence of sensitisation of each challenge concentration:
The results lead to a sensitization rate of 0%.
Other observations:
none
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not sensitising)
- Additional information:
Based on studies performed on Aluminium-magnesium-zinc-carbonate-hydroxide as well as on Alcamizer 5, both analogue substances, it can be concluded that [carbonato(2-)]hexadecahydroxybis(aluminium)hexamagnesium is not a skin sensitizer.
EC #
423-570-6
422-150-1
Name
P93
Alcamizer5
Skin sensitisation
Not sensitizing
Not sensitizing
Migrated from Short description of key information:
Read across from Alcamizer 5 (EC no: 422-150-1) and Aluminium-magnesium-zinc-carbonate-hydroxide (EC no: 423-570-6).
Alcamizer5:
GPMT preliminary study performed according to EEC-Directive 92/69 B.6 Maximization method and GLP: not classified.
GPMT main study performed according to 92/69/EC, Annex V B6 and OECD 406 and GLP: not classified.
Aluminium-magnesium-zinc-carbonate-hydroxide:
Study performed according to EEC-Directive 92/69 B.6 Maximization method and GLP: result not sensitizing
Justification for selection of skin sensitisation endpoint:
The analogue P93 showed no skin sensitization.
Respiratory sensitisation
Endpoint conclusion
- Endpoint conclusion:
- no study available
Justification for classification or non-classification
Based on the results of the studies performed with substance analogues, the substance does not have to be classified for skin sensitization according to Regulation (EC) No 1272/2008.
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