Calcium cyanamide

Additional physico-chemical information

Link to relevant study record(s)

Reference

Endpoint:

other: dusting tendency

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2014-01-27

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Remarks:

The study is regarded as reliable without restrictions because it was conducted in compliance with and guideline. The study was not conducted in compliance with GLP regulation but it was ensured that equivalent measures were met. Test material PERLKA (formulation of calcium cyanamid). For read across justification please refer to IUCLID section 13.

Qualifier:

according to guideline

Guideline:

other: DIN 33897, Part 2

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: EN 15051 Method B "Continous drop"

Deviations:

no

GLP compliance:

no

Specific details on test material used for the study:

PERLKA Standardkorn SWSE-13-108

Results:

dusting tendency concerning A-dust: very low (< 9.01 mg/kg)
dusting tendency concerning E-dust: low (< 268 mg/kg)

Sample name	PERLKA Standardkorn SWSE-13-108
Tap density	1.00 g/cm3
grain moisture	0.12 M.-%
Number of measurements	3
Duration of measurement	30 min
Whole falling mass	901 g

 

Formation of alveole penetrating dust fractions

A-dust value SA	0.34 (< LOD) 0.34 (< LOD) 0.34 (< LOD)
Mean dust value SA DIN 33987-2	< 0.34
Rel. standard deviation	--
A-dust value WR(SAx 26.5) EN 15051-B	< 9.01 mg/kg
dusting tendency	very low

 

Formation of inhalable dust fraction

E-dust value SE	10.0 (<LOD) 10.1 (<LOD) 9.99 (<LOD)
Mean dust value SE DIN 33987-2	0.5 %
Rel. standard deviation	< 10.1
A-dust value WR (SA x 26.5) EN 15051-B	< 268 mg/kg
dusting tendency	low

 

Conclusions:

The dusting tendency of PERLKA concerning A-dust was determined to be very low (< 9.01 mg/kg) and the dusting tendency concerning E-dust was determined to be low (< 268 mg/kg).

Executive summary:

The dusting tendency of PERLKA was determined with IGF-dusting apparatus according to DIN 33897 Part 2 "Continuous case in counter-current" and in accordance with EN 15051 method B. With this apparatus, the dust evolution during a fall event was simulated. The alveolar penetrating A-dust and the respirable E-dust was measured. The standardized minimum measurement duration is 10 minutes. To improve the detection sensitivity, the measurement time was extended to 30 minutes. The dusting tendency concerning A-dust was determined to be very low (< 9.01 mg/kg) and the dusting tendency concerning E-dust was determined to be low (< 268 mg/kg).

Description of key information

The dusting tendency concerning alveolar penetrating dust was determined to

be very low (< 9.01 mg/kg) and the dusting tendency concerning respirable dust was determined to be low (< 268 mg/kg) for PERLKA (formulation of calciumcyanamide).

Additional information

Dust tendency

The dusting tendency for PERLKA was determined with IGF-dusting apparatus according to DIN 33897 Part 2 "Continuous case in counter-current" and in accordance with EN 15051 method B. With this apparatus, the dust evolution during a fall event was simulated. The alveolar penetrating A-dust and the respirable E-dust was measured. The standardized minimum measurement duration is 10 minutes. To improve the detection sensitivity, the measurement time was extended to 30 minutes. The dusting tendency concerning A-dust was determined to be very low (< 9.01 mg/kg) and the dusting tendency concerning E-dust was determined to be low (< 268 mg/kg).