Description Catalogue Number 101408 Synonyms Hexamethylenepararosaniline chloride, Gentian violet (C.I. 42555), Hexamethyl-p-rosanilinium, Methyl violet 10 B Product Information CAS number 548-62-9 EC index number 612-204-00-2 EC number 208-953-6 Grade ACS,Reag. Ph Eur Hill Formula C₂₅H₃₀ClN₃ Molar Mass 407.99 g/mol HS Code 3204 13 00 Structure formula Image Applications Application Crystal violet (C.I. 42555) indicator ACS,Reag. Ph Eur. CAS 548-62-9, pH 2.5 - 3.5 (10 g/l, H₂O, 20 °C). Physicochemical Information Density 1.19 g/cm3 (20 °C) Melting Point 189 - 194 °C pH value 2.5 - 3.5 (10 g/l, H₂O, 20 °C) Bulk density 220 - 400 kg/m3 Solubility 10 g/l Toxicological Information LD 50 oral LD50 Rat 420 mg/kg Safety Information according to GHS Hazard Pictogram(s) Hazard Statement(s) H302: Harmful if swallowed. H318: Causes serious eye damage. H351: Suspected of causing cancer. H410: Very toxic to aquatic life with long lasting effects. Precautionary Statement(s) P273: Avoid release to the environment. P280: Wear eye protection. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. RTECS BO9000000 Storage class 10 - 13 Other liquids and solids 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 Dangerous for the environment Harmful Categories of danger harmful, carcinogenic, irritant, dangerous for the environment R Phrase R 22-40-41-50/53 Harmful if swallowed.Limited evidence of a carcinogenic effect.Risk of serious damage to eyes.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. S Phrase S 26-36/37/39-46-60-61 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.If swallowed, seek medical advice immediately and show this container or label.This material and its container must be disposed of as hazardous waste.Avoid release to the environment. Refer to special instructions/ Safety data sheets. Storage and Shipping Information Storage Store below +30°C. Transport Information Declaration (railroad and road) ADR, RID UN 3077 , 9, III Declaration (transport by air) IATA-DGR UN 3077 , 9, III Declaration (transport by sea) IMDG-Code UN 3077 , 9, III, Marine Pollutant: P Specifications Dye content (spectrophotometrically; calc. on dried substance) ≥ 90.0 % Identity (UV/VIS-Spectrum) passes test Absorbance characteristics (Ratio, E (λmax - 15 nm)/E (λmax + 15 nm)) 0.98 - 1.20 Absorption maximum λmax. (water) 589 - 594 nm Spec. Absorptivity A 1%/1cm (λmax; 0.002 g/l; water) 2000 - 2450 TLC-Test passes test Michler`s ketone < 0.10 % Loss on drying (110 °C, 4 h) ≤ 7.5 % Suitability as indicator (ACS) passes test Suitability as indicator (Reag. Ph. Eur.) passes test
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