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Administrative data

Endpoint:
other: determination of dustiness
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Meets generally accepted scientific standards, well documented and acceptable for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: DIN 55992-1:2006 ("Determination of a parameter for the dust formation of pigments and extenders - Part 1: Rotation method")
Deviations:
no
Principles of method if other than guideline:
Examinations were performed to determine the dustiness of a substance sample designated as "Calcium carbonate - Sugar Factory Lime (bulk)". The objective of these examinations was to determine the dust fractions of this substance.
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
Calcium dihydroxide precipitated with carbon dioxide during sugar juice purification
EC Number:
932-124-4
IUPAC Name:
Calcium dihydroxide precipitated with carbon dioxide during sugar juice purification
Details on test material:
Substance name: Calcium carbonate - Sugar Factory Lime (bulk)
Product name: Sugar Factory Lime
CAS/ No: 471-34-1
EINECS No: 207-439-9
Appearance: light brown powder, weak characteristic odour
Molecular formula: CaCO3
Relative density: 2.7-2.9 (2.73 g/cm3 literature)
Substance humidity: 27.75% (measured by DMT)
Expiry date/ Stability: Stable when handled and stored correctly.
Storage condition: Store in a dry place. Store product closed and only in original packing.

Results and discussion

Results:
Total dustiness [mg/g] = 7.85
Inhalable fraction [mg/g] = 4.45
Thoracic fraction [mg/g] = 0.20
Respirable fraction [mg/g] = 0.01

Any other information on results incl. tables

Table 2: Experimental results

Quantity of substance used [g]

100

Total dust mass in impactor [mg]

784.87

Dust concentration in impactor [mg/m³]

3956.44

Total dustiness [mg/g]

7.85

Inhalable fraction [mg/g]

4.45

Thoracic fraction [mg/g]

0.20

Respirable fraction [mg/g]

0.01

 

Applicant's summary and conclusion

Conclusions:
The dustiness of calcium carbonate - sugar factory lime (bulk) has been determined as follows:

Total dustiness [mg/g] = 7.85
Inhalable fraction [mg/g] = 4.45
Thoracic fraction [mg/g] = 0.20
Respirable fraction [mg/g] = 0.01