Merck 100255 0005 Diphenylamine-4-Sulfonic Acid Barium Salt Redox indicator 5 GR.

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Description
Catalogue Number	100255
Synonyms	4-Anilinobenzene sulfonic acid barium salt, Barium diphenylaminesulfonate

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Product Information
CAS number	6211-24-1
EC index number	056-002-00-7
EC number	228-278-0
Hill Formula	C₂₄H₂₀BaN₂O₆S
Molar Mass	633.9 g/mol
HS Code	2921 44 00
Structure formula Image
Quality Level	MQ200

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Physicochemical Information
Melting Point	300 °C
pH value	5.9 (10 g/l, H₂O, 20 °C) (slurry)
Bulk density	220 kg/m3

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Safety Information according to GHS
Hazard Pictogram(s)	\n
Hazard Statement(s)	H302 + H332: Harmful if swallowed or if inhaled.
Precautionary Statement(s)	P261: Avoid breathing dust.\nP264: Wash skin thoroughly after handling.\nP271: Use only outdoors or in a well-ventilated area.\nP301 + P312: IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell.\nP304 + P340 + P312: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER/doctor if you feel unwell.\nP501: Dispose of contents/ container to an approved waste disposal plant.
Signal Word	Warning
Storage class	10 - 13 Other liquids and solids
WGK	WGK 1 slightly hazardous to water
Disposal	3\nRelatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

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Safety Information
Categories of danger	harmful

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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	Kein Gefahrgut
Declaration (transport by air) IATA-DGR	No Dangerous Good
Declaration (transport by sea) IMDG-Code	No Dangerous Good

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Specifications
Identity (IR-spectrum)	passes test
Absorption maximum λmax. (water)	290 - 295 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.001 %; water; calculated on dried substance)	600 - 700
Loss on Drying (105 °C)	≤ 5 %
Suitability as redox indicator	passes test