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MERCK 106340 Sodium hydrogen selenite for microbiology. CAS No. 7782-82-3, EC Number 231-966-3

MERCK 106340 Sodium hydrogen selenite for microbiology. CAS No. 7782-82-3, EC Number 231-966-3

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106340.0050

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Merck

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Description
Catalogue Number	106340
Synonyms	Sodium biselenite

Product Information
CAS number	7782-82-3
EC index number	034-002-00-8
EC number	231-966-3
Hill Formula	HNaO₃Se
Chemical formula	NaHSeO₃
Molar Mass	150.96 g/mol
HS Code	2842 90 10

Applications
Application	Sodium hydrogen selenite for microbiology. CAS No. 7782-82-3, EC Number 231-966-3.

Physicochemical Information
pH value	5.5 (20 g/l, H₂O, 25 °C)
Bulk density	1600 kg/m3
Solubility	580 g/l

Toxicological Information
LD 50 oral	LD50 Rat 2.5 mg/kg

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H300: Fatal if swallowed. H331: Toxic if inhaled. H373: May cause damage to organs through prolonged or repeated exposure. H410: Very toxic to aquatic life with long lasting effects.
Precautionary Statement(s)	P273: Avoid release to the environment. P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Signal Word	Danger
RTECS	VS7500000
Storage class	6.1B Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials
WGK	WGK 2 water endangering
Disposal	17 Inorganic selenium compounds are toxic and must be handled with caution. Container E. Elemental selenium can be recovered by first oxidizing the salts in aqueous solution with concentrated Nitric acid (Cat.No. 100443). The addition of Sodium hydrogen sulfite solution (Item No. 806356) then causes elemental selenium to precipitate out. Aqueous phase: Container D.

Safety Information
Hazard Symbols	Dangerous for the environment Toxic
Categories of danger	toxic, dangerous for the environment
R Phrase	R 23/25-33-50/53 Toxic by inhalation and if swallowed.Danger of cumulative effects.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase	S 20/21-28-45-60-61 When using do not eat, drink or smoke.After contact with skin, wash immediately with plenty of soap and water.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).This material and its container must be disposed of as hazardous waste.Avoid release to the environment. Refer to special instructions/ Safety data sheets.

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

Transport Information
Declaration (railroad and road) ADR, RID	UN 2630 , 6.1, I
Declaration (transport by air) IATA-DGR	UN 2630 , 6.1, I
Declaration (transport by sea) IMDG-Code	UN 2630 , 6.1, I

Specifications
Assay (iodometric)	≥ 99 %
pH-value (2 %; water)	4.5 - 7.5
Suitability for microbiology	passes test

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MERCK 106340 Sodium hydrogen selenite for microbiology. CAS No. 7782-82-3, EC Number 231-966-3

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