A bill to extend the temporary suspension of duty on 2,7-Naphtalenedisulfonic acid, 4-amino-5-hydroxy-6-[[2-methoxy-5-[[2-(sulfooxy)ethyl]sulfon yl]phenyl]azo]-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo] -, tetrasodium salt.

Amends the Harmonized Tariff Schedule of the United States to extend the temporary suspension of duty on 2,7-Naphtalenedisulfonic acid, 4-amino-5-hydroxy-6-[[2-methoxy-5-[[2-(sulfooxy)ethyl]sulfon yl]phenyl]azo]-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo] -, tetrasodium salt.