A method for marking a liquid petroleum hydrocarbon. The method comprises adding to the liquid petroleum hydrocarbon at least one substituted anthraquinone dye having formula (I)
wherein R
1
and R
2
independently are hydrogen, hydroxy, OR
11
, amino or NR
11
R
12
; R
3
and R
5
independently are alkyl, aryl, aralkyl, heteroalkyl or heterocyclic; R
4
and R
6
independently are hydrogen or alkyl; R
7
, R
8
, R
9
and R
10
independently are cyano, nitro or hydrogen, provided that at least two of R
7
, R
8
, R
9
and R
10
are cyano or nitro; R
11
is alkyl, aryl, aralkyl, heteroalkyl, heterocyclic or alkanoyl; R
12
is hydrogen or alkyl; and wherein the substituted anthraquinone dye(s) has an absorption maximum in the range from 690 nm to 1000 nm.
一种标记液态石油烃的方法。该方法包括向液态石油烃中添加至少一种具有式 (I) 的取代
蒽醌染料
其中 R
1
和 R
2
分别为
氢、羟基、OR
11
、
氨基或 NR
11
R
12
; R
3
和 R
5
独立地为烷基、芳基、芳烷基、杂烷基或杂环; R
4
和 R
6
独立地为
氢或烷基;R
7
, R
8
, R
9
和 R
10
独立地为
氰基、硝基或
氢,条件是至少两个 R
7
, R
8
, R
9
和 R
10
是
氰基或硝基;R
11
是烷基、芳基、芳烷基、杂烷基、杂环基或烷酰基; R
12
是
氢或烷基;其中取代的
蒽醌染料在 690 纳米至 1000 纳米范围内具有吸收最大值。