203.
H302-H31-H319-H33
P21-P24-P270-P271-P280-P302+P32-P304+P340-P30+P31+P338-P330-P32+P34-P403+P233-P40-P01
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质量 (g) = 浓度 (mol/L) × 体积 (L) × (g/mol)