Hach Eriochrome Black T, Practical Grade, 25 g, 13224By Hach $56.09 | EA Quantity discounts available QuantityPrice Product #: 700561Mfr. Part #: 13224Out of Stock - Ships in 22 Days Quantity -+ Add to Cart Free Ground Shipping On All Orders Over $1500!*Conditions Apply* Details Description [1-(1-Hydroxy-2-naphthylazo)-6-nitro-2-naphthol-4-sulfonic acid, sodium salt] Practical Grade, CAS No. 1787-61-7 C20H12O7N3SNa, FW = 46... DetailsBackDescription [1-(1-Hydroxy-2-naphthylazo)-6-nitro-2-naphthol-4-sulfonic acid, sodium salt] Practical Grade, CAS No. 1787-61-7 C20H12O7N3SNa, FW = 461.40. Features CAS No. 1787-61-7 C20H12O7N3SNa FW=461.40 Product Specifications Platform Jar Documents Safety Data Sheet California residents see Prop 65 WARNINGS