Barium sulfate CAS 13462-86-7

Chemical Property:

Molecular Formula	BaO4S
Molar Mass	233.39
Density	4.5
Melting Point	1580 °C
Boling Point	decomposes at 1580℃ [KIR78]
Water Solubility	0.0022 g/L (50 ºC)
Solubility	water: insoluble
Appearance	White powder
Specific Gravity	4.5
Color	White to yellow
Exposure Limit	ACGIH: TWA 5 mg/m3OSHA: TWA 15 mg/m3; TWA 5 mg/m3NIOSH: TWA 10 mg/m3; TWA 5 mg/m3
Solubility Product Constant(Ksp)	pKsp: 9.97
Merck	14,994
PH	3.5-10.0 (100g/l, H2O, 20℃)suspension
Storage Condition	Storage temperature: no restrictions.
Stability	Stable.
Sensitive	Easily absorbing moisture
MDL	MFCD00003455
Physical and Chemical Properties	properties colorless orthorhombic crystal or white shaped powder. melting point 1580 ℃ relative density 4.50(15 ℃) solubility is almost insoluble in water, ethanol and acid. Soluble in hot concentrated sulfuric acid. colorless orthorhombic crystal or white amorphous powder. Relative density 4.50 (15 degrees C). Melting point 1580 °c. Polycrystalline transformation occurs at around 1150 °c. Significant decomposition began at about 1400 °c. Chemical stability. Practically insoluble in water, ethanol and acids. Soluble in hot concentrated sulfuric acid, dry easy to agglomerate. 600 C with carbon can be reduced to barium sulfide.
Use	It is mainly used as a weighting agent for oil and natural gas drilling mud, and is also an important mineral raw material for extracting metal barium and preparing various barium compounds. The most important barium compounds in industry are barium carbonate, barium chloride, sulfuric acid, barium nitrate, barium hydroxide, barium oxide, barium peroxide, barium chromate, Barium manganate, barium chlorate, lithopone, barium polysulfide, etc. Barium compounds are widely used as raw materials and fillers for rubber, plastics, pigments, coatings, paper making, textiles, paints, inks, electrodes; Used as barium-based grease, oil refining, beet sugar, Rayon raw materials; Used as pesticides, sterilants, rodenticides, explosives, Green pyrotechnic, signal bomb, tracer, medical X-ray photography indicators; Also used in glass, ceramics, leather, electronics, building materials, metallurgy and other departments. Barium metal can be used for television and real

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Product Detail

Product Tags

Hazard Symbols	Xn – Harmful
Risk Codes	R20/21/22 – Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 – Irritating to eyes, respiratory system and skin.
Safety Description	S22 – Do not breathe dust. S24/25 – Avoid contact with skin and eyes. S36 – Wear suitable protective clothing. S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany	-
RTECS	CR0600000
TSCA	Yes
HS Code	28332700
Toxicity	LD50 orally in Rabbit: > 20000 mg/kg

Introduction

Tasteless, non-toxic. Decomposition above 1600 ℃. Soluble in hot concentrated sulfuric acid, insoluble in water, organic and inorganic acids, caustic solution, soluble in hot sulfurous acid and hot concentrated sulfuric acid. The chemical properties are stable, and it is reduced to barium sulfide by heat with carbon. It does not change color when exposed to hydrogen sulfide or toxic gases in the air.

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