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Potassium dichromate standard solution

Potassium dichromate standard solution

Potassium dichromate standard solution

Potassium dichromate standard solution, available grades: Analytical Standard 1/300–1/24 mol/L (about 0.02–0.25 N), matrix: water. Potassium dichromate standard solution for volumetric analysis. Contains hexavalent chromium and is declared as a Class 6.1 toxic liquid (UN 3287, packing group III); also a marine pollutant. Used as the standard titrant for redox titration (iron and COD determination).

OEM supported. Custom purity & specifications available, please contact our manager.

Hazard Class:Class 6.1 (Toxic substance)
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Specifications

AliasPotassium dichromate volumetric solution, Potassium dichromate titrant
CAS Number7778-50-9Molecular FormulaK2Cr2O7
Molecular Weight294.19AppearanceClear orange-yellow odourless solution; water matrix, 1/300–1/24 mol/L (about 0.02–0.25 N)
HS Code2841.50UN Number3287
Density2.676 at 77 °F (USCG, 1999) - Denser than water; will sinkBoiling PointDecomposes at 932 °F (NTP, 1992)
Melting Point748 °F (NTP, 1992)Flash PointN/A
OriginChinaVapor PressureN/A
Solubility10 to 50 mg/mL at 68 °F (NTP, 1992)Storage ConditionCool, dark place, tightly sealed, away from acids, oxidizers and foodstuffs
Packaging500 mL / 25 L / 200 L / 1 tShelf Life6-24 months
GradeAnalytical Standard 1/300–1/24 mol/L (about 0.02–0.25 N), matrix: waterEINECS231-906-6
MDLN/AChina Customs Code2841500000
GHS ClassificationDanger: H301; H312; H314; H317; H330; H334; H340; H350; H360FD; H372; H410Hazard ClassClass 6.1 (Toxic substance)
CategoryExplosive PrecursorsUpdated2026-09-12

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Frequently asked questions about Potassium dichromate standard solution

What is Potassium dichromate standard solution? What is its CAS number?

Potassium dichromate standard solution is an industrial chemical raw material. Its CAS number is 7778-50-9. Its molecular formula is K2Cr2O7, with a molecular weight of 294.19. Common synonyms include Potassium dichromate volumetric solution, Potassium dichromate titrant. Typical appearance: Clear orange-yellow odourless solution; water matrix, 1/300–1/24 mol/L (about 0.02–0.25 N).

What are the synonyms and registry numbers of Potassium dichromate standard solution?

Potassium dichromate standard solution (CAS 7778-50-9) is listed under the following identifiers. Synonyms: Potassium dichromate volumetric solution, Potassium dichromate titrant. EINECS number: 231-906-6.

What documents are provided with Potassium dichromate standard solution (CAS 7778-50-9)?

A Certificate of Analysis (COA) is issued for each batch of Potassium dichromate standard solution. Standard purity grade: Industrial Grade. Safety Data Sheet (MSDS/SDS) and technical data sheet are available on request before ordering.

Is Potassium dichromate standard solution classified as dangerous goods? Which UN number applies?

Transport of Potassium dichromate standard solution (CAS 7778-50-9) is arranged according to its hazardous classification. UN number: 3287. GHS hazard statements: H301, H312, H314, H317. We ship under IMDG (sea), IATA (air) or ADR (road) rules with compliant UN packaging; the final classification is confirmed against the batch test report.

What are the typical physical and chemical properties of Potassium dichromate standard solution?

Typical properties of Potassium dichromate standard solution (CAS 7778-50-9): appearance Clear orange-yellow odourless solution; water matrix, 1/300–1/24 mol/L (about 0.02–0.25 N); density 2.676 at 77 °F (USCG, 1999) - Denser than water; will sink; melting point 748 °F (NTP, 1992); boiling point Decomposes at 932 °F (NTP, 1992); solubility 10 to 50 mg/mL at 68 °F (NTP, 1992). These are reference values, not a batch specification.

What is the HS code for Potassium dichromate standard solution?

The HS code for Potassium dichromate standard solution (CAS 7778-50-9) is 2841.50. Customs classification may differ by destination country, so please confirm the final code with us before ordering.
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