Merck 104864 Potassium dichromate for analysis EMSURE® ACS,ISO,Reag. Ph Eur 500 gr

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LB.M.1048640500

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Synonyms: Potassium bichromate, Potassium pyrochromate CAS Number: 7778-50-9 EC Number: 231-906-6 Molar Mass: 294.19 g/mol Chemical Formula: K₂Cr₂O₇ Hill Formula: Cr₂K₂O₇ Grade: ACS,ISO,Reag. Ph Eur

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CAS Number: 7778-50-9

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Merck 104864 Potassium dichromate for analysis EMSURE^® ACS,ISO,Reag. Ph Eur 500 gr
Catalogue Number	104864
Replaces	PX1445-2; PX1445
Synonyms	Potassium bichromate, Potassium pyrochromate

MERCK 104864 MERCK 104864 Potassium dichromate for analysis EMSURE® ACS,ISO,Reag. Ph Eur.

Product Information
CAS number	7778-50-9
EC index number	024-002-00-6
EC number	231-906-6
Grade	ACS,ISO,Reag. Ph Eur
Hill Formula	Cr₂K₂O₇
Chemical formula	K₂Cr₂O₇
Molar Mass	294.19 g/mol
HS Code	2841 50 00

Applications
Application	Potassium dichromate for analysis EMSURE® ACS,ISO,Reag. Ph Eur. Potassium dichromate CAS No. 7778-50-9, EC Number 231-906-6. Potassium dichromate MSDS (material safety data sheet) or SDS here.

Physicochemical Information
Boiling point	>500 °C (1013 hPa)
Density	2.7 g/cm3 (20 °C)
Melting Point	398 °C
pH value	3.6 (100 g/l, H₂O)
Bulk density	1250 kg/m3
Solubility	115 g/l

Toxicological Information
LD 50 oral	LD50 Rat 90.5 mg/kg
LD 50 dermal	LD50 Rat 1170 mg/kg

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H340: May cause genetic defects. H350: May cause cancer. H360FD: May damage fertility. May damage the unborn child. H272: May intensify fire; oxidizer. H301: Toxic if swallowed. H312: Harmful in contact with skin. H314: Causes severe skin burns and eye damage. H317: May cause an allergic skin reaction. H330: Fatal if inhaled. H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled. H335: May cause respiratory irritation. H372: Causes damage to organs through prolonged or repeated exposure. H410: Very toxic to aquatic life with long lasting effects.
Precautionary Statement(s)	P201: Obtain special instructions before use. P221: Take any precaution to avoid mixing with combustibles, heavy-metal compounds, acids and alkalis. P273: Avoid release to the environment. 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.
RTECS	HX7680000
Storage class	5.1B Oxidizing hazardous materials
WGK	WGK 3 highly water endangering
Disposal	22 Inorganic peroxides and oxidants as well as bromine and iodine should be rendered harmless by reduction with acidic sodium thiosulfate solution (Cat. No. 106513); container D or E. Slightly soluble oxidants should be collected separately in container E or I.

Safety Information
Hazard Symbols	Very toxic Dangerous for the environment Oxidising
Categories of danger	carcinogenic, mutagenic, toxic for reproduction, oxidizing, very toxic, corrosive, sensitizing, dangerous for the environment
R Phrase	R 45-46-60-61-21-25-26-48/23- 8-34-42/43-50/53 May cause cancer.May cause heritable genetic damage.May impair fertility.May cause harm to the unborn child.Also harmful in contact with skin.Also toxic if swallowed.Also very toxic by inhalation.Also toxic: danger of serious damage to health by prolonged exposure through inhalation.Contact with combustible material may cause fire.Causes burns.May cause sensitisation by inhalation and skin contact.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase	S 53-45-60-61 Avoid exposure - obtain special instructions before use.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 below +30 °C.

Transport Information
Declaration (railroad and road) ADR, RID	UN 3086 , 6.1 (5.1), II
Declaration (transport by air) IATA-DGR	UN 3086 , 6.1 (5.1), II
Declaration (transport by sea) IMDG-Code	UN 3086 , 6.1 (5.1), II

Specifications
Assay (iodometric, calc. on dried substance)	≥ 99.9 %
Insoluble matter	≤ 0.005 %
Chloride (Cl)	≤ 0.001 %
Sulphate (SO₄)	≤ 0.005 %
Ca (Calcium)	≤ 0.002 %
Cu (Copper)	≤ 0.001 %
Fe (Iron)	≤ 0.001 %
Na (Sodium)	≤ 0.02 %
Pb (Lead)	≤ 0.005 %
Loss on drying (130 °C)	≤ 0.05 %

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