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EC number: 208-863-7 | CAS number: 544-17-2
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
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- 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
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- Nanomaterial specific surface area
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- Endpoint summary
- Stability
- Biodegradation
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- 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

Eye irritation
Administrative data
- Endpoint:
- eye irritation: in vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 999
- Report date:
- 1999
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 405 (Acute Eye Irritation / Corrosion)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Calcium diformate
- EC Number:
- 208-863-7
- EC Name:
- Calcium diformate
- Cas Number:
- 544-17-2
- Molecular formula:
- CH2O2.1/2Ca
- IUPAC Name:
- calcium diformate
- Details on test material:
- - Name of test material (as cited in study report): Calciumformiat technisch
- Substance type: salt
- Physical state: solid
- Analytical purity: 99.8%
- Purity test date: 1999-Jul-06
- Lot/batch No.: H0509
Constituent 1
Test animals / tissue source
- Species:
- rabbit
- Strain:
- Himalayan
- Details on test animals or tissues and environmental conditions:
- TEST ANIMALS
- Source: LPT Laboratory of Pharmacology and Toxicology KG, Löhndorf, Germany
- Age at study initiation: 4-8.5 months
- Weight at study initiation: 2.2 - 2.3 kg
- Housing: singly in cages with special restrainers to avoid possibility of skin irritation by excrements or urine
- Diet: standard diet ALTROMIN 2023 ad libitum
- Water: tap water ad libitum
- Acclimatisation: at least 20 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20+/-3
- Humidity (%): 50+/-20
- Photoperiod (hrs dark / hrs light): 12/12
Test system
- Vehicle:
- unchanged (no vehicle)
- Controls:
- not required
- Amount / concentration applied:
- TEST MATERIAL
- Amount applied: 100 mg - Duration of treatment / exposure:
- single dose
- Observation period (in vivo):
- 14 days
- Number of animals or in vitro replicates:
- 3
- Details on study design:
- REMOVAL OF TEST SUBSTANCE
- Washing: no data
SCORING SYSTEM: according to Draize, cf. table contained in OECD 405
TOOL USED TO ASSESS SCORE: hand-slit lamp (at 1, 24, 48, and 72 hours)/ fluorescein (at 24 hours and 7 days)
Results and discussion
In vivo
Resultsopen allclose all
- Irritation parameter:
- cornea opacity score
- Basis:
- mean
- Time point:
- other: 24 h
- Score:
- 2
- Max. score:
- 4
- Irritation parameter:
- cornea opacity score
- Basis:
- mean
- Time point:
- other: 48 hours
- Score:
- 2
- Max. score:
- 4
- Irritation parameter:
- cornea opacity score
- Basis:
- mean
- Time point:
- other: 72 hours
- Score:
- 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- iris score
- Basis:
- mean
- Time point:
- other: 24 hours
- Score:
- 2
- Max. score:
- 2
- Irritation parameter:
- iris score
- Basis:
- mean
- Time point:
- other: 48 hours
- Score:
- 2
- Max. score:
- 2
- Irritation parameter:
- iris score
- Basis:
- mean
- Time point:
- other: 72 hours
- Score:
- 1
- Max. score:
- 2
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- conjunctivae score
- Basis:
- mean
- Time point:
- other: 24 hours
- Score:
- 2
- Max. score:
- 3
- Irritation parameter:
- conjunctivae score
- Basis:
- mean
- Time point:
- other: 48 hours
- Score:
- 2
- Max. score:
- 3
- Irritation parameter:
- conjunctivae score
- Basis:
- mean
- Time point:
- other: 72 hours
- Score:
- 1.67
- Max. score:
- 3
- Reversibility:
- fully reversible within: 14 days
- Irritation parameter:
- chemosis score
- Basis:
- mean
- Time point:
- other: 24 hours
- Score:
- 2
- Max. score:
- 4
- Irritation parameter:
- chemosis score
- Basis:
- mean
- Time point:
- other: 48 hours
- Score:
- 1.67
- Max. score:
- 4
- Irritation parameter:
- chemosis score
- Basis:
- mean
- Time point:
- other: 72 hours
- Score:
- 0.67
- Max. score:
- 4
- Reversibility:
- fully reversible within: 14 days
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #1
- Time point:
- 24 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #2
- Time point:
- 24 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #3
- Time point:
- 24 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #1
- Time point:
- 48 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #2
- Time point:
- 48 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #3
- Time point:
- 48 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #1
- Time point:
- 72 h
- Score:
- 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #2
- Time point:
- 72 h
- Score:
- 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #3
- Time point:
- 72 h
- Score:
- 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- iris score
- Basis:
- animal #1
- Time point:
- 24 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- iris score
- Basis:
- animal #2
- Time point:
- 24 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- iris score
- Basis:
- animal #3
- Time point:
- 24 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- iris score
- Basis:
- animal #1
- Time point:
- 48 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- iris score
- Basis:
- animal #2
- Time point:
- 48 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- iris score
- Basis:
- animal #3
- Time point:
- 48 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- iris score
- Basis:
- animal #1
- Time point:
- 72 h
- Score:
- 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- iris score
- Basis:
- animal #2
- Time point:
- 72 h
- Score:
- 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- iris score
- Basis:
- animal #3
- Time point:
- 72 h
- Score:
- 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #1
- Time point:
- 24 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #2
- Time point:
- 24 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #3
- Time point:
- 24 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #1
- Time point:
- 48 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #2
- Time point:
- 48 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #3
- Time point:
- 48 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #1
- Time point:
- 72 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #2
- Time point:
- 72 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #3
- Time point:
- 72 h
- Score:
- 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- chemosis score
- Basis:
- animal #1
- Time point:
- 24 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- chemosis score
- Basis:
- animal #2
- Time point:
- 24 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- chemosis score
- Basis:
- animal #3
- Time point:
- 24 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- chemosis score
- Basis:
- animal #1
- Time point:
- 48 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- chemosis score
- Basis:
- animal #2
- Time point:
- 48 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- chemosis score
- Basis:
- animal #3
- Time point:
- 48 h
- Score:
- 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- chemosis score
- Basis:
- animal #1
- Time point:
- 72 h
- Score:
- 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- chemosis score
- Basis:
- animal #2
- Time point:
- 72 h
- Score:
- 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Irritation parameter:
- chemosis score
- Basis:
- animal #3
- Time point:
- 72 h
- Score:
- 0
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
Any other information on results incl. tables
Table: eye irritation results (scores of animals 1/2/3)
Time post administration (hours) |
CORNEA |
IRIS |
CONJUNCTIVAE |
Corneal area affected (%) |
|
|
Opacity |
|
Redness |
Chemosis |
|
24 |
2/2/2 |
2/2/2 |
2/2/2 |
2/2/2 |
50% (animals No. 1 and 3) |
48 |
2/2/2 |
2/2/2 |
2/2/2 |
2/2/1 |
|
72 |
1/1/1 |
1/1/1 |
2/2/1 |
1/1/0 |
75% animal No. 2 |
|
|
|
|
|
|
7 days |
|
|
|
|
no pathological finding |
All reactions were reversible within the 14 day observation period. Corneal opacity and iritis were absent on day 7.
Conjunctival effects persisted until day 13. Induration of the lower lid was seen in a all animals on days 3 through 13 after treatment.
Applicant's summary and conclusion
- Conclusions:
- Calcium diformate caused reversible irritating to the rabbit's eyes. Results require labeling R41: risk of serious eye damage.
Classification: risk of serious damage to eyes. - Executive summary:
The eye irritating properties of calcium diformate (100 mg) was examined in rabbits (Himalayan, 3 males) according to OECD guideline No. 405 and under GLP conditions. Marked corneal opacity (mean score 2.0), severe iritis (mean score 2.0), and marked conjunctival reactions (mean scores redness and chemosis 2.0) were seen during days 1 to 3. All reactions were reversible within the 14 day observation period. Corneal opacity and iritis were absent on day 7, conjunctival effects on day 14. Induration of the lower lid was seen in all animals on days 3 through 13 after treatment.
Overall, calcium diformate was irritating to the rabbit's eyes. Results require labeling (R41: risk of serious eye damage) and classification (risk of serious damage to eyes) (LPT, 1999). The study is considered to be valid and acceptable for assessment.
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