MSDS Potassium Dichromate (K2Cr2O7) – Safety Data Sheet & GHS Hazards

Summary MSDS for Potassium Dichromate (K2Cr2O7), CAS 7778-50-9: substance identity, GHS hazard classification, hazard and precautionary statements, and links to the manufacturer's official SDS.

Identity summary

Name Potassium Dichromate
Other names (IUPAC) dipotassium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium
Molecular formula K2Cr2O7
CAS number 7778-50-9
Molar mass 294.18 g/mol
PubChem CID 24502

Hazard identification (GHS)

Signal word: DANGER

Pictograms:

GHS05 – Corrosive
Corrosive
GHS06 – Acute toxicity
Acute toxicity
GHS08 – Health hazard
Health hazard
GHS09 – Environmental hazard
Environmental hazard
GHS03 – Oxidizer
Oxidizer

Hazard statements (H)

  • H330: Fatal if inhaled.
  • H301: Toxic if swallowed.
  • H312: Harmful in contact with skin.
  • H314: Causes severe skin burns and eye damage.
  • H360: May damage fertility or the unborn child.
  • H370: Causes damage to organs.
  • H372: Causes damage to organs through prolonged or repeated exposure.
  • H317: May cause an allergic skin reaction.
  • H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled.
  • H340: May cause genetic defects.
  • H350: May cause cancer.
  • H410: Very toxic to aquatic life with long lasting effects.
  • H272: May intensify fire; oxidizer.

Precautionary statements (P)

Prevention

  • P273: Avoid release to the environment.
  • P272: Contaminated work clothing should not be allowed out of the workplace.
  • P260: Do not breathe dust.
  • P270: Do not eat, drink or smoke when using this product.
  • P202: Do not handle until all safety precautions have been read and understood.
  • P220: Keep away from clothing and other combustible materials.
  • P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P201: Obtain special instructions before use.
  • P271: Use only outdoors or in a well-ventilated area.
  • P264: Wash skin thoroughly after handling.
  • P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
  • P284: Wear respiratory protection.

Response

  • P370 + P378: In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.
  • P391: Collect spillage.
  • P342 + P311: If experiencing respiratory symptoms: Call a POISON CENTER/doctor.
  • P308 + P311: IF exposed or concerned: Call a POISON CENTER/doctor.
  • P362 + P364: Take off contaminated clothing and wash it before reuse.
  • P303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.
  • P333 + P313: If skin irritation or rash occurs: Get medical advice/ attention.
  • P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
  • P301 + P310 + P330: IF SWALLOWED: Immediately call a POISON CENTER/doctor. Rinse mouth.
  • P304 + P340 + P310: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor.
  • P305 + P351 + P338 + P310: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/doctor.

Storage

  • P403 + P233: Store in a well-ventilated place. Keep container tightly closed.
  • P405: Store locked up.

Disposal

  • P501: Dispose of contents/ container to an approved waste disposal plant.

The GHS classification above matches TCI (Tokyo Chemical Industry) official data for product P3156 Potassium Dichromate. Substance identity from PubChem CID 24502.

Download the official SDS & CoA

The applicable Safety Data Sheet is the manufacturer's SDS for the product and lot you purchase. For products available from AMI Scientific:

TCI P3156 – Potassium Dichromate Official SDS & CoA (TCI)
TCI P3156 – Potassium Dichromate View product

SDS and lot-specific CoA are sent with the quotation/order or on request.

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What is an MSDS/SDS?

An MSDS (Material Safety Data Sheet), now called an SDS (Safety Data Sheet), is a 16-section document describing the hazards, handling, storage, first aid, and disposal of a chemical. Read the full MSDS guide and other MSDS pages.

This summary was compiled by AMI Scientific from TCI official GHS data for information purposes. Classification may differ by concentration, form, and supplier. Always refer to the manufacturer's official SDS for the product and lot you use. Updated: 23-10-2026.