Potassium dichromate
- CAS Number
- 7778-50-9
- HSN Code
- 28415090
- Molecular Formula
- K2Cr2O7
- Catalogue Number
- AL01236
- Purity
- ≥ 98%
- Molecular Weight
- 294.18 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Potassium dichromate (practical, potassium bichromate) is a widely used strong oxidizing agent essential to classical volumetric analysis. It is a bright orange-red crystalline solid that is highly soluble in water, making it an effective reagent in various chemical applications. This compound is notable for its strong oxidizing properties, which are utilized in a variety of analytical and industrial processes. Due to its toxicity and classification as a known human carcinogen, potassium dichromate must be handled with care and appropriate safety measures.
Also known as Potassium bichromate.
- Catalogue No.
- AL01236
- CAS Number
- 7778-50-9
- Molecular Formula
- K2Cr2O7
- Molecular Weight
- 294.18 g/mol
- HSN Code
- 28415090
- Grade
- 98% Practical
- Product Form
- Substance
Potassium dichromate appears as an orange-red crystalline solid. It has a melting point of 398 °C and a boiling point of 500 °C (decomposes). The density of potassium dichromate is approximately 2.68 g/cm³. It is highly soluble in water, with a solubility of about 32 g/100 mL at 20 °C. The compound has a pH value of approximately 4.0 in a saturated solution, indicating its acidic nature. It has a strong, characteristic odor, although it is not typically described in terms of a specific scent.
- Appearance
- Orange-red crystalline solid
- Shelf Life
- 2 years
- Packaging
- Available in 500 g and 1 kg containers
- Storage
- Store in a cool, dry place, away from incompatible materials and sources of ignition.
1.1 — Product identifier
- Chemical Name
- Potassium dichromate
- Catalogue No.
- AL01236
- Product form
- Substance
- CAS Number
- 7778-50-9
- EC Number
- 231-906-6
- Grade
- 98% Practical
- EC Index Number
- Cr(IV)
- Chemical Formula
- K2Cr2O7
- HSN Code
- 28415090
- Synonyms
- Potassium bichromate
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Strong oxidizing agent, analytical reagent
- Uses advised against
- Not specified
1.3 — Details of the supplier of the safety data sheet
- Company identification
- Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.
1.4 — Emergency Contact Details
- Phone / e-Mail
- Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in
2.3 — Other hazards
- Other hazards
- Known human carcinogen, potential reproductive toxicity
3.1 — Substance
- Name
- Potassium dichromate
- CAS No.
- 7778-50-9
4.1 — Description of first aid measures
- First-aid measures after inhalation
- Move to fresh air. If symptoms persist, seek medical attention.
- First-aid measures after skin contact
- Wash with soap and water. Seek medical attention if irritation develops.
- First-aid measures after eye contact
- Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing and seek medical attention.
- First-aid measures after ingestion
- Do not induce vomiting. Rinse mouth and seek medical attention immediately.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Irritation of the respiratory tract, skin irritation, eye damage, and potential carcinogenic effects.
4.3 — Indication of any immediate medical attention and special treatment needed
- General information
- Treat symptomatically. Show this safety data sheet to the treating physician.
5.1 — Extinguishing media
- Suitable extinguishing media
- Water spray, carbon dioxide, dry chemical powder, foam.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- Strong oxidizer; may cause or enhance combustion of other materials.
5.3 — Advice for firefighters
- Protection during firefighting
- Do not enter fire area without proper protective equipment, including respiratory protection.
6.1.1 — For non-emergency personnel
- Emergency procedures
- Evacuate area and ventilate. Use appropriate protective equipment.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Contain and collect spillage. Dispose of in accordance with local regulations.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Avoid contact with skin and eyes. Use appropriate personal protective equipment (PPE).
- Hygiene measures
- Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
7.2 — Conditions for safe storage, including any incompatibilities
- Storage conditions
- Store in a cool, dry, well-ventilated area, away from incompatible substances.
8.2 — Exposure controls
- Hand protection
- Protective gloves (e.g. nitrile rubber)
- Eye protection
- Chemical safety goggles or safety glasses
- Skin and body protection
- Wear suitable protective clothing
- Respiratory protection
- Use a NIOSH-approved respirator if exposure limits are exceeded.
9.1 — Information on basic physical and chemical properties
- Physical state
- Solid
- Colour
- Orange-red
- Odour
- Characteristic
- Odour threshold
- Not applicable
- pH value
- 4.0 (saturated solution)
- Relative evaporation rate (butylacetate=1)
- Not applicable
- Melting point
- 398 °C
- Freezing point
- Not applicable
- Boiling point
- 500 °C (decomposes)
- Flash point
- Not applicable
- Auto-ignition temperature
- Not applicable
- Decomposition temperature
- 500 °C
- Flammability (solid, gas)
- Not flammable, but a strong oxidizer
- Vapour pressure
- Negligible
- Relative vapour density at 20°C
- Not applicable
- Density
- 2.68 g/cm³
- Solubility
- 32 g/100 mL in water at 20 °C
- Log Pow
- Not applicable
- Viscosity, kinematic
- Not applicable
- Viscosity, dynamic
- Not applicable
- Explosive properties
- Not explosive
- Oxidising properties
- Strong oxidizer
- Explosive limits
- Not applicable
10.1 — Reactivity
- Reactivity
- Stable under normal conditions, but reacts violently with reducing agents.
10.2 — Chemical stability
- Chemical stability
- Stable under recommended storage conditions.
10.3 — Possibility of hazardous reactions
- Possibility of hazardous reactions
- No dangerous reactions known under normal conditions of use.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Reducing agents, organic materials, acids.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- Toxic if swallowed, inhaled, or absorbed through skin.
- Skin corrosion/irritation
- Causes skin irritation.
- Serious eye damage/irritation
- Causes serious eye damage.
- Respiratory or skin sensitisation
- May cause allergic skin reactions.
- Germ cell mutagenicity
- Not classified
- Carcinogenicity
- Not classified
- Specific target organ toxicity (single exposure)
- May cause damage to organs through prolonged or repeated exposure.
- Specific target organ toxicity (repeated exposure)
- Not classified
12.1 — Toxicity
- Toxicity information
- Not specified
12.2 — Persistence - degradability
- Persistence - degradability
- Not specified
12.3 — Bioaccumulative potential
- Bioaccumulative potential
- Not specified
12.4 — Mobility in soil
- Mobility in soil
- Not specified
12.6 — Other adverse effects
- Environmental precautions
- Not specified
13.1 — Waste treatment methods
- Additional Info
- Dispose of contents/container in accordance with local, regional, national and international regulations.
14.1 — UN number
- UN-No. (ADR)
- 3087
- UN-No. (IMDG)
- 3087
- UN-No. (IATA)
- 3087
- UN-No. (ADN)
- 3087
- UN-No. (RID)
- 3087
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Potassium dichromate
- Proper Shipping Name (IMDG)
- Potassium dichromate
- Proper Shipping Name (IATA)
- Potassium dichromate
- Proper Shipping Name (ADN)
- Potassium dichromate
- Proper Shipping Name (RID)
- Potassium dichromate
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- 5.1
14.4 — Packing group
- Packing group (ADR)
- II
- Packing group (IMDG)
- II
- Packing group (IATA)
- II
- Packing group (ADN)
- II
- Packing group (RID)
- II
14.5 — Environmental hazards
- Dangerous for the environment
- Not specified
- Marine pollutant
- Not specified
- Other information
- No supplementary information available
15.1 — Safety, health and environmental regulations/legislation specific for the substance or mixture
- 15.1.1 EU-Regulations
- Not specified
Potassium dichromate is primarily used as an oxidizing reagent in chemical analysis, particularly in COD (chemical oxygen demand) testing for water quality assessment. It is also employed in classical redox titration research, where it serves as a standard solution for determining the concentration of reducing agents. Additionally, this compound finds applications in the leather tanning industry, dyeing processes, and as a corrosion inhibitor in various industrial settings. Its strong oxidizing properties make it valuable in the synthesis of other chemicals and in laboratory experiments.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL01236
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 294.18 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay | ≥ 98% | 99.5% |
| Moisture Content | ≤ 0.5% | 0.3% |
| Residue on Ignition | ≤ 0.1% | 0.05% |
| Related Substances | None detected | None detected |
| Solubility | Soluble in water | Soluble |
The above product is expected to comply with 98% Practical grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 98% Practical | ≥ 98% | Melting point: 398 °C | ≤ 0.5% | ≤ 0.1% | None detected | Soluble in water |
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