Merck 101735 1000 Barium Hydroxide Octahydrate Extra Pure 1 KG.

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Description
Catalogue Number	101735
Synonyms	Caustic baryta, Barium oxide hydrate octahydrate

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Product Information
CAS number	12230-71-6
EC index number	056-002-00-7
EC number	241-234-5
Hill Formula	BaH₂O₂ * 8 H₂O
Chemical formula	Ba(OH)₂ * 8 H₂O
Molar Mass	315.48 g/mol
HS Code	2816 40 00
Quality Level	MQ200

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Physicochemical Information
Density	2.180 g/cm3
Melting Point	78 °C
pH value	12.5 (50 g/l, H₂O, 20 °C) (saturated aqueous solution)
Bulk density	900 - 1100 kg/m3
Solubility	72 g/l

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Toxicological Information
LD 50 oral	LD50 Rat 550 mg/kg

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Safety Information according to GHS
Hazard Pictogram(s)	\n\n
Hazard Statement(s)	H302 + H332: Harmful if swallowed or if inhaled.\nH314: Causes severe skin burns and eye damage.
Precautionary Statement(s)	P260: Do not breathe dust.\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.\nP303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.\nP304 + P340 + P310: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor.\nP305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word	Danger
Storage class	6.1A Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials
WGK	WGK 1 slightly hazardous to water
Disposal	14\nInorganic salts: Container I. Neutral solutions of the these salts: Container D. Before placing in Container D, check the pH with pH-Universal indicator strips (Item No. 109535).

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Safety Information
Categories of danger	harmful, corrosive

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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 2923 , 8 (6.1), II
Declaration (transport by air) IATA-DGR	UN 2923 , 8 (6.1), II
Declaration (transport by sea) IMDG-Code	UN 2923 , 8 (6.1), II, Segregation Group: 18 (Alkalis)

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Specifications
Assay (acidimetric)	≥ 98.0 %
Substances insoluble in dilute hydrochloric acid	≤ 0.01 %
Carbonate (as BaCO₃)	≤ 2.0 %
Chloride (Cl)	≤ 0.002 %
Sulphide (S)	≤ 0.001 %
Heavy metals (as Pb)	≤ 0.002 %
Ca (Calcium)	≤ 0.005 %
Fe (Iron)	≤ 0.001 %
Sr (Strontium)	≤ 1.0 %
Substances not precipitated by dilute sulfuric acid (as sulfate)	≤ 0.2 %