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MERCK

MERCK 104864.1000 Potassium Dichromate cryst. GR,ACS, ISO CAS No.7778-50-9 (SD.M.104864.1000)

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MERCK 104864.1000 Potassium Dichromate cryst. GR,ACS, ISO CAS No.7778-50-9

 

Description
Catalogue Number 104864
Replaces PX1445-2; PX1445
Synonyms Potassium bichromate, Potassium pyrochromate
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 14
Quality Level MQ300
Physicochemical Information
Boiling point >500 °C (1013 hPa)
Density 2.680 g/cm3 (20 °C)
Melting Point 390 °C
pH value 3.5 - 5.0 (29.4 g/l, H₂O, 25 °C)
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 Pictogram(s)
Hazard Pictogram(s)
Hazard Pictogram(s)
Hazard Pictogram(s)
Hazard Pictogram(s)
Hazard Statement(s) 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.
H340: May cause genetic defects.
H350: May cause cancer.
H360FD: May damage fertility. May damage the unborn child.
H372: Causes damage to organs through prolonged or repeated exposure if inhaled.
H410: Very toxic to aquatic life with long lasting effects.
Precautionary Statement(s) P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P260: Do not breathe dust.
P280: Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing protection.
P303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.
P304 + P340 + P310: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor.
P305 + 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
RTECS HX7680000
Storage class 5.1B Oxidizing hazardous materials
WGK WGK 3 highly hazardous to water
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
Categories of danger carcinogenic, mutagenic, toxic for reproduction, oxidizing, very toxic, corrosive, sensitizing, dangerous for the environment
Storage and Shipping Information
Storage Store at +2°C to +30°C.
Transport Information
Declaration (railroad and road) ADR, RID UN 3087 , 5.1 (6.1), II
Declaration (transport by air) IATA-DGR UN 3087 , 5.1 (6.1), II
Declaration (transport by sea) IMDG-Code UN 3087 , 5.1 (6.1), II
Specifications
Assay (iodometric, calc. on dried substance) ≥ 99.9 %
Insoluble matter ≤ 0.005 %
Chloride (Cl) ≤ 0.001 %
Sulfate (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 %
Global Trade Item Number
Catalogue Number GTIN
1048640500 04022536055800
1048641000 04022536055824
Etiketler
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