Estimated production by the official inspection of coal-tar dyes (including dye aluminum lakes) in 1997

The number of official inspection of coal-tar dyes and their lakes from April in 1997 till March in 1998 were 571 in total. The quantity which passed inspection amounted to 160.3 ton in Japan. The production of color in each month was summarised in Table 1, and by each producing company in Table 2. The food coal-tar dye produced in the largest quantity was Food Yellow No.4, occupying 39.8% in this period.