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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Nanomaterial dustiness

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Administrative data

Endpoint:
nanomaterial dustiness
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Justification for type of information:
As iron manganese trioxide are similar in particle size and density they are highly probably to show also a similar dustiness.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1990
Report date:
1990

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
The dustiness of the sample was tested by a Heubach dustmeter (airflow 20L/min). Two determinations with 100 g of the sample and five successive measuremnts of the filters were prepared.
GLP compliance:
no
Type of method:
rotating cylinder
Remarks:
Heubach dustmeter

Test material

Constituent 1
Chemical structure
Reference substance name:
Diiron trioxide
EC Number:
215-168-2
EC Name:
Diiron trioxide
Cas Number:
1309-37-1
Molecular formula:
Fe2O3
IUPAC Name:
diiron trioxide
Test material form:
solid: nanoform

Data gathering

Instruments:
Heubach dustmeter Typ 1 (horizontal set-up)
sample mass: 100 g pigment
air flow: 20 L/min
air mass: 100 L
two determinations with five succesive measurements of the filters

Results and discussion

Dustiness index
Mean:
6.45 mg/kg
St. dev.:
1.142 mg/kg
Remarks on result:
other: n=10

Any other information on results incl. tables

initial weight: 100 g, airflow 20 L/min

Sample Determination 1st measurement 2nd measurement 3rd measurement 4th measurement 5th measurement mean
Bayferrox Rot 110 1 86 mg 58 mg 59 mg 56 mg 53 mg 62 mg
2 84 mg 67 mg 61 mg 62 mg 59 mg 67 mg
mean 1 - 2 85 mg 63 mg 60 mg 59 mg
 56 mg 64.5 mg

Applicant's summary and conclusion

Conclusions:
The pigment Bayferrox 110 has a dustiness of 6.45 +/- 1.142 mg/kg.