Merck 101408 0025 Crystal Violet (C.i. 42555) indicator Acs 25 GR.

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Description
Catalogue Number	101408
Synonyms	Hexamethylenepararosaniline chloride, Gentian violet (C.I. 42555), Hexamethyl-p-rosanilinium, Methyl violet 10 B

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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	3212 90 00
Structure formula Image
Quality Level	MQ200

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Physicochemical Information
Density	1.19 g/cm3 (20 °C)
Melting Point	215 °C
pH value	2.5 - 3.5 (10 g/l, H₂O, 20 °C)
Bulk density	220 - 400 kg/m3
Solubility	10 g/l

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Toxicological Information
LD 50 oral	LD50 Rat 420 mg/kg

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Safety Information according to GHS
Hazard Pictogram(s)	\n\n\n\n
Hazard Statement(s)	H302: Harmful if swallowed.\nH318: Causes serious eye damage.\nH351: Suspected of causing cancer.\nH410: Very toxic to aquatic life with long lasting effects.
Precautionary Statement(s)	P202: Do not handle until all safety precautions have been read and understood.\nP273: Avoid release to the environment.\nP280: Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing protection.\nP301 + P312: IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell.\nP305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.\nP308 + P313: IF exposed or concerned: Get medical advice/ attention.
Signal Word	Danger
RTECS	BO9000000
Storage class	10 - 13 Other liquids and solids
WGK	WGK 3 highly hazardous to water
Disposal	9\nCarcinogenic 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).

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Safety Information
Categories of danger	harmful, carcinogenic, irritant, dangerous for the environment

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Storage and Shipping Information
Storage	Store at +2°C to +30°C.

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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

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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