N.Y. Comp. Codes R. & Regs. tit. 21, § 1211.54
Explosives, Class C, listed in section 1211.150 for reference to this section are restricted to the following quantities:
Blasting caps—not more than 100 caps
Delay electric igniters—not more than 500 igniters
Electric blasting caps—not more than 200 caps
Electric squibs—not more than 500 squibs
Percussion caps—not more than 500 caps
Safety squibs—not more than 500 squibs