Special Provision: A

Sodium nitrate

Sodium nitrate and potassium nitrate mixtures

Sodium methylate

Sodium hydrosulfide, with less than 25 percent water of crystallization

Sodium hydrosulfide with not less than 25 percent water of crystallization

Sodium hydride

Sodium dinitro-o-cresolate, wetted with not less than 15 percent water, by mass

Sodium dithionite or Sodium hydrosulfite

Sodium dinitro-o-cresolate, dry or wetted with less than 15 percent water, by mass

Sodium dinitro-o-cresolate, wetted with not less than 10% water, by mass