Description Catalogue Number 107509 Description PARAROSANILINE (CHLORIDE) (C.I. 42500) F Overview The PAS (periodic acid Schiff) reaction is one of the most frequently used chemical methods for histology. This Certistain® Pararosaniline (chloride) solid dye is used to prepare the Schiff’s reagent required for the PAS reaction, for the staining of mucopolysaccharides in histological tissue specimens. As CERTISTAIN® dye it is chemically quality-certified according to highest standards and strict specifications. As an IVD product and CE registered, it can be used hassle-free in diagnostics and laboratory accreditations. Product Information CAS number 569-61-9 EC index number 611-031-00-X EC number 209-321-2 Hill Formula C₁₉H₁₈ClN₃ Molar Mass 323.83 g/mol HS Code 3204 13 00 Structure formula Image Applications Application Pararosaniline (chloride) (C.I. 42500) for microscopy Certistain®. CAS 569-61-9, molar mass 323.83 g/mol. Physicochemical Information Melting Point 268 - 270 °C decomposes Bulk density 500 kg/m3 Solubility 10 g/l Safety Information according to GHS Hazard Pictogram(s) Hazard Statement(s) H350: May cause cancer. Precautionary Statement(s) P201: Obtain special instructions before use. P308 + P313: IF exposed or concerned: Get medical advice/ attention. Signal Word Danger Storage class 6.1C Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects WGK WGK 3 highly water endangering Disposal 9 Carcinogenic compounds and flammable compounds labelled "Highly toxic" or "Toxic": container F. Alkyl sulfates are carcinogenic; Take particular care to avoid inhalation and skin contact. To neutralize alkyl sulfates, add dropwise (from a dropping funnel) to concentrated ice-cool Ammonia solution (Cat.No. 105426) with vigorous stirring. Before placing in container D, check the pH with pH Universal indicator strips (Cat.No. 109535). Safety Information Hazard Symbols Toxic Categories of danger carcinogenic R Phrase R 45 May cause cancer. S Phrase S 53-45 Avoid exposure - obtain special instructions before use.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). Storage and Shipping Information Storage Store at +5°C to +30°C.