| 摘要 |
The disazo pigment of the formula <IMAGE> (I) in the beta -modification thereof, whose X-ray diffraction pattern at an interplanar spacing of 3.33 A DEG shows a line of very strong intensity, at 5.38 and 8.33 A DEG lines of strong intensity, at 3.74, 4.24, 4.68, 4.94, 5.18 and 8.70 A DEG lines of medium intensity, at 4.05, 4.37, 6.33 and 12.6 A DEG lines of medium to faint intensity, at 3.50, 3.49, 5.65, 6.09, 6.71, 10.6 and 11.5 A DEG lines of faint intensity.
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