Check the listing for details. Lignin Pink (Acid Red 1), 95%, 5g. Condition: New. Listed at 29.95 USD. Lignin Pink (Acid Red 1), 95%, 5g For Research & Development Not for drug, human, animal, or food use Specifications: Appearance (Color) Red Appearance (Form) Powder Lambda max. 503.0 to 507.0 nm(H2O) Lambda max.2 530.0 to 534.0 nm(H2O) Absorbance(E1%1cm) min. 250(H2O, 503.0 to 507.0 nm) Absorbance(E1%1cm)2 min. 250(H2O, 530.0 to 534.0 nm) Drying loss max. 10.0% A stain frequently needed for preparing microscope slides. Similar to Acid Fuchsin, but proven to be more permanent, without fading of specimens. CAS: 3734-67-6 FORMULA: C18H13N3Na2O8S2 This item will be shipped in accordance with FedEx/UPS carriers, per DOT 49CFR regulations, which will meet or exceed all of USPS regulations per 49CFR 172.101, published in Federal Register 10742. Note: eBay please do not delist.