( ( ( Any ( solution ( or ( intimate admixture ) ) ) ) ( of ( ( ( ( ( two or ) more ) substances ) , ) ( ( ( ( at least ) one ) ( of which ) ) ( is ( present ( as ( ( ( a ( hazardous substance ) ) , ) ( which ( ( do not ) ( ( react chemically ) ( with ( each other ) ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (DT Any) (NN solution) (CC or) (JJ intimate) (NN admixture)) (PP (IN of) (NP (NP (QP (CD two) (CC or) (JJR more)) (NNS substances)) (, ,) (SBAR (WHNP (WHNP (QP (IN at) (JJS least) (CD one))) (WHPP (IN of) (WHNP (WDT which)))) (S (VP (VBZ is) (ADJP (JJ present) (PP (IN as) (NP (NP (DT a) (JJ hazardous) (NN substance)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP do) (RB not) (VP (VB react) (ADVP (RB chemically)) (PP (IN with) (NP (DT each) (JJ other))))))))))))))) (. .)))
Any solution or  intimate admixture of two or more substances, at least one of which is present as a hazardous substance, which do not react chemically with each other.
(ROOT (S (NP (DT All) (NNS solutions)) (VP (VBP contain) (NP (QP (IN at) (JJS least) (CD two)) (NNS substances))) (. .)))