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EC number: 500-537-5 | CAS number: 161075-00-9
- 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
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Endpoint summary
Administrative data
Description of key information
An in vivo dermal sensitisation test, conducted according to OECD
guideline 406 (Buehler test) is reported.
The study was conducted under GLP, the reliability of the study
according to Klimish score is K1.
Basing on the experimental result, according to REGULATION (EC) No
1272/2008, GALDEN LMW does not meet the classification criteria for
human health for skin sensitisation.
Key value for chemical safety assessment
Skin sensitisation
Link to relevant study records
- Endpoint:
- skin sensitisation: in vivo (non-LLNA)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 9 June 1992 to 10 July 1992
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- Guideline-conform study conducted under GLP.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 406 (Skin Sensitisation)
- Version / remarks:
- (1981)
- GLP compliance:
- yes
- Type of study:
- Buehler test
- Justification for non-LLNA method:
- The test was performed before the pubblication of the OECD LLNA test (2002) and the adoption of REACH (2006)
- Species:
- guinea pig
- Strain:
- Dunkin-Hartley
- Sex:
- male
- Details on test animals and environmental conditions:
- TEST ANIMALS
- Source: livestock farming
- Age at study initiation: 1-2 months
- Weight at study initiation: 390-482 g
- Housing: 2 or 3 animals/cage in an air-conditioned room. Wire cages (40.5 x 38.5 x 18)cm with a stainless steel feeder.
- Diet (e.g. ad libitum): Standard GLP diet, available ad libitum.
- Water (e.g. ad libitum): from municipal water main system, filtered and disrtibuted ad libitum
- Acclimation period: Five days. Animals were observed daily to ascertain their fitness for the study.
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22 °C +- 2
- Humidity (%): 55% +- 10
- Air changes (per hr): about 20/hour
- Photoperiod (hrs dark / hrs light): 12 hour cicle (7 a.m.-7 p.m.)
IN-LIFE DATES: From: To: not reported - Route:
- epicutaneous, occlusive
- Vehicle:
- unchanged (no vehicle)
- Concentration / amount:
- 0.5 ml of undiluted test material
- Day(s)/duration:
- 27
- Adequacy of induction:
- highest technically applicable concentration used
- No.:
- #1
- Route:
- epicutaneous, occlusive
- Vehicle:
- unchanged (no vehicle)
- Concentration / amount:
- 0.5 ml of undiluted test material
- Day(s)/duration:
- Day 28 / 24 hours
- Adequacy of challenge:
- highest non-irritant concentration
- No. of animals per dose:
- 10 (10 males for test group + 10 males for control group)
2 animals for the preliminary test - Details on study design:
- RANGE FINDING TESTS:
The preliminary test was performed on two animals in order to select the maximum well tolerated concentration for the induction phase and the maximum concentration proved to be not irritating for the challenge exposure.
The test article was assayed undiluted by occlusive patch on two animals. 0.5 ml of the test article was applied onto the skin with a closed patch. Twenty-four hours after administration, the patches were removed and the animals were observed for up to 48 hours for local reaction on the skin area of the patch application.
The test article was well tolerated and not irritant, therefore it was used undiluted in the sensitization test.
MAIN STUDY
A. INDUCTION EXPOSURE
- No. of exposures: 3
- Exposure period: 6 hours
- Test groups: undiluted test material.
- Control group: not treated
- Site: on the shoulder region in an area of about 6x6 cm.
- Frequency of applications: applications were performed on day 0, 7 and 14.
- Duration: 27 days
- Concentrations: 0.5 ml of undiluted test material.
B. CHALLENGE EXPOSURE
- No. of exposures: 1
- Day(s) of challenge: day 28 from the beginning of the test.
- Exposure period: 24 hours
- Test groups: undiluted test material.
- Control group: undiluted test material.
- Site: on one flank, in an area of about 6x6 cm
- Concentrations: 0.5 ml of undiluted test material.
- Evaluation (hr after challenge): 24 and 48 hours [the skin reactions was read immediately after the patch removal (day 29), and the day after (day 30) ].
OTHER:
The evaluation of skin reaction was according to the following scale:
0,0 normal skin
0,5 very slight erythema
1,0 slight erythema
2,0 moderate-intense erythema, slight edema
3,0 marked erythema and edema
The results were expressed in terms of incidence and severity of response:
INCIDENCE: the number of animals showing responses of 1 or greater at either 24 or 48 hour divided by the number of animals tested.
SEVERITY: the sum of the test grades divided by the number of animals tested.
CLINICAL SIGNS
Animals were checked daily for clinical signs.
BODY WEIGHT
Body weight was recorded pre-trial and weekly thereafter. - Positive control substance(s):
- no
- Positive control results:
- No positive control included in the study
- Key result
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 0.5 ml of undiluted material
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Clinical observations:
- none
- Remarks on result:
- no indication of skin sensitisation
- Key result
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 0.5 ml of undiluted material
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Clinical observations:
- none
- Remarks on result:
- no indication of skin sensitisation
- Key result
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- negative control
- Dose level:
- 0.5 ml of undiluted material
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Clinical observations:
- none
- Remarks on result:
- no indication of skin sensitisation
- Key result
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- negative control
- Dose level:
- 0.5 ml of undiluted material
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Clinical observations:
- none
- Remarks on result:
- no indication of skin sensitisation
- Key result
- Reading:
- other: positive control group was not required by the method.
- Group:
- positive control
- Dose level:
- positive control group not required by the method.
- Remarks on result:
- not measured/tested
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- On the basis of the results, under the experimental conditions applied, GALDEN LMW did not appear to possess sensitizing capacity.
- Executive summary:
The potential for the contact sensitization of the test article GALDEN LMW was assessed in the guinea pig using the test described by Buhler, according to OECD guideline No. 406.
A preliminary test was performed in order to select the maximum well tolerated concentration for the induction phase and the maximum concentration proved to be not irritating for the challenge exposure: 0,5 ml of the test article were applied undiluted by occlusive patch on two animals. Twenty-four hours after administration, the patches were removed and the animals were observed for up to 48 hours for local reaction on the skin area of the patch application.
The test article was well tolerated and not irritant, therefore it was used undiluted in the sensitization test.
During the 27-day induction phase of the study, 0.5 ml of undiluted GALDEN LMW were applied three times (days 0, 7 and 14) by an occlusive patch to ten guinea pigs. Every exposure had a duration of 6 hours.
At the challenge, on the 28 from the beginning of the test, the previously-exposed ten animals were treated with 0,5 ml of undiluted GALDEN LMW, applied for 24 hours by occlusive patch. In the same way, ten control animals not previously-treated were exposed concurrently.
Skin reaction was read immediately after patch removal, and 24 hour later. Reactions were evaluated according a score system.
Animals were checked daily for clinical signs during the study. Body weight was recorded pre-trial and weekly thereafter.
At the challenge no animals showed positive reaction. No skin reactivity was observed in the negative group. The body weight gain of the animals troughout the test was normal.
On the basis of these results, under the experimental conditions applied, GALDEN LMW did not appear to possess sensitizing capacity.
Reference
The body weight gain of the animals troughout the test was normal.
No animals showed positive reaction at the challenge.
No skin reactivity was observed in the negative control group.
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not sensitising)
- Additional information:
Under the reported in vivo skin sensitisation test, ten guinea pigs were tested according to Buehler test.
A preliminary test was performed in order to select the maximum well tolerated concentration for the induction phase and the maximum concentration proved to be not irritating for the challenge exposure.
During the 27-day induction phase of the study, 0.5 ml of undiluted GALDEN LMW were applied three times (days 0, 7 and 14) by an occlusive patch to ten guinea pigs. Every exposure had a duration of 6 hours.
At the challenge, on the 28th day from the beginning of the test, the previously-exposed ten animals were treated with 0,5 ml of undiluted GALDEN LMW, applied for 24 hours by occlusive patch. In the same way, ten control animals not previously-treated were exposed concurrently.
Skin reaction was read immediately after patch removal, and 24 hour later. Reactions were evaluated according to score system.
No animals showed positive reaction at the challenge. No skin reactivity was observed in the negative group. The body weight gain of the animals troughout the test was normal.
In conclusion GALDEN LMW did not appear to possess sensitizing capacity.
Respiratory sensitisation
Endpoint conclusion
- Endpoint conclusion:
- no study available
Justification for classification or non-classification
Since no reactions were observed at the challenge in the treated animals, according to REGULATION (EC) No 1272/2008, GALDEN LMW does not meet the classification criteria for human health for skin sentisitisation.
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.
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