Description
Catalogue Number	124505
Replaces	OX0260-5; OX0260-3
Synonyms	Osmic acid, Osmiumtetraoxide
Description	Osmium(VIII) oxide
Overview	Osmium tetroxide for microscopy can be used to visualize unsaturated lipids. A part of the lipids is immediately blackened by the influence of osmic acid solution. The immediate black coloration results from the -C=C- double bond of the unsaturated fatty acid. The fatty acids that are made brownish at first can be blackened by treatment with 60-70% alcohol. For electron microscopy or semithin sectioning the glutardialdehyde-fixed specimens are post-fixed with osmium(VIII) oxide. Lipid inclusions appear black on a yellow to brown background. It is an IVD / CE registered product

Product Information
CAS number	20816-12-0
EC index number	076-001-00-5
EC number	244-058-7
Hill Formula	O₄Os
Chemical formula	OsO₄
Molar Mass	254.19 g/mol
HS Code	2843 90 90

Applications
Application	Osmium(VIII) oxide for microscopy. CAS 20816-12-0, EC Number 244-058-7, chemical formula OsO₄.

Physicochemical Information
Boiling point	130 °C (1013 hPa)
Density	4.91 g/cm3 (20 °C)
Melting Point	40 °C
pH value	6 (25 g/l, H₂O, 20 °C)
Vapor pressure	10 hPa (20 °C)
Bulk density	1500 kg/m3
Solubility	65 g/l

Toxicological Information
LD 50 oral	LD50 Rat 15 mg/kg

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H300 + H310 + H330: Fatal if swallowed, in contact with skin or if inhaled. H314: Causes severe skin burns and eye damage.
Precautionary Statement(s)	P280: Wear protective gloves/ protective clothing/ eye protection/ face protection. P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P302 + P352: IF ON SKIN: Wash with plenty of soap and water. P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Signal Word	Danger
Storage class	6.1B Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials
WGK	WGK 3 highly water endangering
Disposal	27 Residues containing valuable recoverable metals should be forwarded for recycling. Container H.

Safety Information
Hazard Symbols	Very toxic
Categories of danger	very toxic, corrosive
R Phrase	R 26/27/28-34 Very toxic by inhalation, in contact with skin and if swallowed.Causes burns.
S Phrase	S 7/9-26-45 Keep container tightly closed and in a well-ventilated place.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).

Storage and Shipping Information
Storage	Store at +15°C to +25°C.

Transport Information
Declaration (railroad and road) ADR, RID	UN 2471 , 6.1, I
Declaration (transport by air) IATA-DGR	UN 2471 , 6.1, I
Declaration (transport by sea) IMDG-Code	UN 2471 , 6.1, I, Marine Pollutant: P

Specifications
Identity (Raman-spectrum)	conforms

Taksit Seçenekleri

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MERCK 124505 Osmium(VIII) oxide for microscopy. CAS 20816-12-0, EC Number 244-058-7, chemical formula OsO₄

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