.
"false" .
.
"Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for alpha_hexachlorocyclohexane is C6H6Cl6."@en .
.
"2009-07-06 15:41:29.0" .
"SDN:P07::CF12N216" .
"mass_concentration_of_alpha_hexachlorocyclohexane_in_air"@en .
"SDN:P07::CF12N216" .
"1" .
.
.
.
"1" .
"" .
.
"SDN:P07::CF12N216" .
"accepted"@en .
"2009-07-06 15:41:29.0" .
.
.