Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 231-906-6 | CAS number: 7778-50-9
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Guidance on Safe Use
Administrative data
First-aid measures
Inhalation:
Seek immediate medical attention. Remove exposed person to fresh air. If breathing is difficult, administer oxygen. If breathing has stopped, provide artificial respiration by trained personnel.
Ingestion:
Seek immediate medical attention. Remove exposed person to fresh air and keep person warm and at rest. Wash out mouth with water and remove dentures if any. if victim is conscious, they shoukd drink large amounts of water or milk. If vomitting occurs, keep the head as low as possible to prevent vomit entering lungs. If unconscious, place in recovery position. Maintain an open airway. Loosen tight clothing such as a collar, tie, belt or waistband.
Skin Contact:
Seek immediate medical attention for large amounts. For small amounts, seek medical attention if discomfort continues. Remove contaminated clothes, wash affected skin thoroughly with water; Thoroughly wash clothing before re-use.
Eye Contact:
Seek immediate medical attention. Flush thoroughly with water for at least 15 minutes lifting lower and upper eyelids occasionally.
Fire-fighting measures
This substance is non-combustible, but it is a strong oxidizer and its heat of reaction with reducing agents or combustible materials may cause ignition. It releases oxygen during decomposition, which enhances combustion. Keep away from combustible materials. Potassium dichromate reacts strongly with materials that are readily oxidised. Reaction may be rapid enough to cause ignition. Combustion can be violent with finely divided oxidisable substances. Oxidising capability may also sustain a fire involving easily oxidisable material. Use fire-extinguishing media appropriate for surrounding materials. Flood with large amounts of water, and water spray may be used to cool down containers exposed to fire. In the event of a fire, wear full chemical-protective clothing and self-contained breathing apparatus
Accidental release measures
Precautions:
For non-emergency personnel: Keep unnecessary people away; Ensure area is well ventilated and/or use appropriate respiratory protection; prevent skin and eye contact; Eliminate all sources of ignition; Contact emergency personnel.
For emergency responders: Protective clothing must be worn. The selection of clothing should take account to the magnitude of the release and the likely level of exposure.
Environmental precautions:
Prevent material from entering sewers, water sources or low lying areas.
Clean-up procedure:
Avoid dispersal of spilt material and prevent material coming into contact with soil, waterways, drains or sewers. Vacuum or sweep spilled substance into sealable containers. If appropriate, moisten first to prevent dusting. Do NOT absorb in saw-dust or other combustible absorbents. Transfer to suitable, labelled containers for disposal. Dispose of at an appropriately licensed waste disposal facility.
Alternatively, reduce to chromium(III) and dispose of reduced chromium at an appropriately licensed waste disposal facility.
Handling and storage
Precautions for safe handling:
Prevent contact with eyes and skin. Avoid handling that leads to the formation of dust. Do not handle along with incompatible materials. Ensure adequate ventilation of the working area. Wear suitable protective equipment.
Conditions for safe storage:
Keep containers tightly closed. Keep in a cool, dry, well ventilated area away from ignition sources. Prevent contact with combustible, organic, or other readily oxidisable materials (paper, wood, sulphur, aluminium, plastics, etc.), strong alkalis and metals.
Transport information
Land transport (UN RTDG/ADR/RID)
- UN number:
- 3086
Shipping information
- Proper shipping name and description:
- TOXIC SOLID, OXIDIZING, N.O.S. (POTASSIUM DICHROMATE)
- Chemical name:
- POTASSIUM DICHROMATE
- Language:
- English
- Labels:
- 6.1 + 5.1
Special provisions / remarks
- Special provisions:
- 274
- Remarks:
- None
Shippingopen allclose all
Remarksopen allclose all
Marine transport (UN RTDG/IMDG)
Shippingopen allclose all
Remarksopen allclose all
Shippingopen allclose all
Remarksopen allclose all
SpecialProvisionsopen allclose all
Exposure controls / personal protection
Engineering Controls:
Maintain air concentrations below occupational exposure standards. Processes likely to generate dust or fume should be contained within a closed system.
Personal Protection
Eye/face:
Approved safety glasses must be worn. Ensure that eye wash stations are close to the working area.
Skin/hands:
Protective clothing must be worn. Use chemically resistant impervious gloves complying with an approved standard; glove choice should take account of expected level and duration of contact. The selection of clothing should take account to the task being performed and the likely level of exposure. Hands, arms and face should be thoroughly washed after handling this product and before breaks and the end of the working day. Contaminated clothing should be removed with care to prevent skin contact during undressing and contaminated clothing should be thoroughly washed before re-use. Ensure safety showers are close to the workstation location.
Respiratory:
Ensure good ventilation to control exposure below exposure limits. If containment is not possible and/or ventilation is not adequate, wear an approved respirator. Suitable half mask respirator with filter P3 (EN 143). Use explosion proof ventilation equipment.
Thermal hazards:
Not applicable
Stability and reactivity
Reactivity:
Oxidiser. Readily oxidises combustible, organic or other readily oxidisable materials (wood, paper, sulphur, aluminium, plastics, etc.). Corrosive to metals.
Chemical stability:
Stable under ambient conditions.
Possibility of hazardous reactions:
Reacts strongly with readily oxidisable materials.
Conditions to avoid:
Heat
Incompatible materials:
Powdered metal. Reducing agents. Concentrated sulphuric acid. Combustible substances. Hydrazine and derivatives. Glycerol Sulphides. Oxidisable materials especially in the presence of strong acid solutions.
Hazardous Decomposition Products:
Thermal decomposition may produce chromic oxide or other oxides of chromium. Thermal decomposition begins at 500°C.
Disposal considerations
Ensure local and national regulatory requirements are met.
Do not discharge into sewers or waterways. Do not incinerate or dispose of in landfill. Reclaim if possible. If reclamation is not possible, dispose of at an appropriately licensed waste disposal facility.
Alternatively, reduce to trivalent Cr(III) and dispose of at an appropriately licensed waste disposal facility.
All containers should be disposed of in an environmentally safe manner and in accordance with governmental regulations.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.