Pinit WARNING:About product imagesSigma Aldrich 219916-100G Hydroxy naphthol Blue Disodium Salt, ACS Reagent Grade, 100g BottleSigma-Aldrich 219916-100GItem Number:SIG-219916-100G Manufacturer Part No:219916-100GManufacturer:Sigma-AldrichUnits:100g Bottle $146.63 UnitMSRPYour PriceQtyEach156.00146.63Sold in:EachesInvalid quantity value To request the lead time of this item please click here Add to Cart New Order & Product PoliciesDetailsCAS Number 165660-27-5100g BottleDocuments & Videos