• Potassium chromate

  • Grade: ACS,Reag. Ph Eur ; Hill Formula: CrK₂O₄ ; Chemical formula: K₂CrO₄ ; Molar Mass: 194.19 g/mol ; Code: 1049520250
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Physicochemical Information

Density

2.73 g/cm3 (18 °C)

Melting Point

985 °C

pH value

9.0 - 9.8 (50 g/l, HO, 20 °C)

Bulk density

1400 kg/m3

Solubility

637 g/l

Safety Information according to GHS

Hazard Pictogram(s)


Hazard Statement(s)

H340: May cause genetic defects.
H350i: May cause cancer by inhalation.
H315: Causes skin irritation.
H317: May cause an allergic skin reaction.
H319: Causes serious eye irritation.
H335: May cause respiratory irritation.
H410: Very toxic to aquatic life with long lasting effects.

Precautionary Statement(s)

P201: Obtain special instructions before use.
P273: Avoid release to the environment.
P280: Wear protective gloves.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
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 + P313: IF exposed or concerned: Get medical advice/ attention.

Signal Word

Danger

Storage class

6.1B Non-combustible, acute toxic Cat. 1 and 2 / very toxic 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

Hazard Symbols

Dangerous for the environment
Toxic

Categories of danger

carcinogenic, mutagenic, irritant, sensitizing, dangerous for the environment

R Phrase

R 49-46-36/37/38-43-50/53
May cause cancer by inhalation.May cause heritable genetic damage.Irritating to eyes, respiratory system and skin.May cause sensitisation by 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 3288 , 6.1, II

Declaration (transport by air) IATA-DGR

UN 3288 , 6.1, II

Declaration (transport by sea) IMDG-Code

UN 3288 , 6.1, II

Specifications

Assay (iodometric)

≥ 99.5 %

In water insoluble matter

≤ 0.005 %

pH-value (5 %; water)

9.0 - 9.8

Chloride (Cl)

≤ 0.001 %

Sulfate (SO)

≤ 0.01 %

Ca (Calcium)

≤ 0.005 %

Na (Sodium)

≤ 0.02 %

Pb (Lead)

≤ 0.005 %

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