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Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Justification for type of information:
Hop extract has a long history of industrial manufacture, and so company specific information from product technical specifications would be sufficient. However, three batches of hop extract were measured in the Lead Registrant's laboratory to corroborate the technical specification information.
Qualifier:
no guideline required
Principles of method if other than guideline:
Three different hop extracts were used - standard hop extract batch no. 160024, standard hop extract batch number 160026, and oil-rich hop extract batch number BI/YYF/1701. The hop extracts were melted by placing in a drying cabinet at 68.8 oC. The hop extracts were then introduced into pre-weighed 25-ml volumetric flasks. The gross weight of the flask plus hop extract was determined at 20.5 oC. Reverse osmosis water was then added to the flasks to bring the total volume up to 25 ml, and the weight measured again. The weights were used to calculate the density of the hop extracts.
Type of method:
other: Similar to oycnometer method
Specific details on test material used for the study:
Three different hop extracts were used - standard hop extract batch no. 160024, standard hop extract batch number 160026, and oil-rich hop extract batch number BI/YYF/1701.
Key result
Type:
relative density
Density:
>= 0.9 - <= 1.1 g/cm³
Temp.:
20 °C

Material

Batch no.

Tare weight 25-ml volumetric flask (g)

Gross weight flask + extract (g)

Weight of hop extract added (g)

Weight of flask + hop extract + reverse osmosis water added to bring total volume to 25 ml (g)

Weight of reverse osmosis water required to bring total volume to 25 ml (g)

Volume of hop extract calculated by difference (cm3)

Calculated density of hop extract (g.cm-3)

Hop extract

160024

33.1345

34.7593

1.6248

58.0874

23.3281

1.6719

0.9718

Hop extract

160026

22.4552

23.8192

1.3640

47.4168

23.5976

1.4024

0.9726

Oil-enriched hop extract

BI/YYF/1701

33.0182

35.9233

2.9051

57.9652

22.0419

2.9581

0.9821

Conclusions:
The density of the UVCB hop extract is between 0.9 and 1.1 g per cm^3.

Description of key information

Key value for chemical safety assessment

Relative density at 20C:
1

Additional information

The density of the UVCB hop extract is between 0.9 and 1.1 g per cm^3.

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