Silver dichromate
- CAS Number
- 7784-02-3
- HSN Code
- 28432900
- Molecular Formula
- Ag2Cr2O7
- Catalogue Number
- AL1330D
- Purity
- ≥ 98%
- Molecular Weight
- 431.76 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Silver dichromate is an insoluble silver(I)-chromium(VI) salt that serves as a significant reference compound in inorganic chemistry. It is characterized by its dark red-brown crystalline appearance and is primarily utilized in various chemical analyses and research applications. The compound is notable for its high purity level of 98%, making it suitable for precise laboratory work. Due to the presence of hexavalent chromium, it is essential to handle silver dichromate with care, adhering to safety protocols to mitigate its toxic effects.
Also known as Silver chromate, Dichromic acid silver salt.
- Catalogue No.
- AL1330D
- CAS Number
- 7784-02-3
- Molecular Formula
- Ag2Cr2O7
- Molecular Weight
- 431.76 g/mol
- HSN Code
- 28432900
- Grade
- 98%
- Product Form
- Substance
Silver dichromate appears as a dark red-brown crystalline powder. It has a molecular weight of 431.76 g/mol and is insoluble in water, which limits its use in aqueous solutions. The compound has a melting point of approximately 200 °C, where it decomposes rather than melting. Its density is reported to be around 2.73 g/cm³, indicating a relatively heavy solid. The compound is also known to be hygroscopic, absorbing moisture from the air, which can affect its stability and handling.
- Appearance
- Dark red-brown crystalline powder
- Shelf Life
- -
- Packaging
- -
- Storage
- Store in a cool, dry place away from incompatible materials.
1.1 — Product identifier
- Chemical Name
- Silver dichromate
- Catalogue No.
- AL1330D
- Product form
- Substance
- CAS Number
- 7784-02-3
- EC Number
- 232-141-6
- Grade
- 98%
- EC Index Number
- Cr(IV)
- Chemical Formula
- Ag2Cr2O7
- HSN Code
- 28432900
- Synonyms
- Silver chromate, Dichromic acid silver salt
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Used as a reference compound in inorganic chemistry and analytical applications.
- 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
- Contains hexavalent chromium, which is toxic and a known carcinogen.
3.1 — Substance
- Name
- Silver dichromate
- CAS No.
- 7784-02-3
4.1 — Description of first aid measures
- First-aid measures after inhalation
- Move to fresh air. Seek medical attention if symptoms persist.
- 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
- Symptoms of exposure may include respiratory irritation, skin irritation, and eye damage.
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
- May emit toxic fumes when heated. Use appropriate fire-fighting measures.
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. Wear appropriate protective equipment. Contain and collect spillage.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Collect spillage with suitable absorbent material and 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
- Handle with gloves and avoid inhalation of dust. Use in a well-ventilated area.
- 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 tightly closed container in a cool, dry place, away from incompatible materials.
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 appropriate respiratory protection if dust is generated.
9.1 — Information on basic physical and chemical properties
- Physical state
- Solid
- Colour
- Dark red-brown
- Odour
- Odourless
- Odour threshold
- Not applicable
- pH value
- Not applicable
- Relative evaporation rate (butylacetate=1)
- Not applicable
- Melting point
- 200 °C (decomposes)
- Freezing point
- Not applicable
- Boiling point
- Not applicable
- Flash point
- Not applicable
- Auto-ignition temperature
- Not applicable
- Decomposition temperature
- 200 °C
- Flammability (solid, gas)
- Not flammable
- Vapour pressure
- Not applicable
- Relative vapour density at 20°C
- Not applicable
- Density
- 2.73 g/cm³
- Solubility
- Insoluble in water
- Log Pow
- Not applicable
- Viscosity, kinematic
- Not applicable
- Viscosity, dynamic
- Not applicable
- Explosive properties
- Not explosive
- Oxidising properties
- Oxidizer
- Explosive limits
- Not applicable
10.1 — Reactivity
- Reactivity
- Stable under normal conditions but may react with strong 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
- Strong reducing agents, acids, and bases.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- Toxic if inhaled or ingested; may cause skin and eye irritation.
- 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 respiratory irritation.
- 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)
- Not assigned
- UN-No. (IMDG)
- Not assigned
- UN-No. (IATA)
- Not assigned
- UN-No. (ADN)
- Not assigned
- UN-No. (RID)
- Not assigned
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Silver dichromate
- Proper Shipping Name (IMDG)
- Silver dichromate
- Proper Shipping Name (IATA)
- Silver dichromate
- Proper Shipping Name (ADN)
- Silver dichromate
- Proper Shipping Name (RID)
- Silver dichromate
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- 6.1
14.4 — Packing group
- Packing group (ADR)
- III
- Packing group (IMDG)
- III
- Packing group (IATA)
- III
- Packing group (ADN)
- III
- Packing group (RID)
- III
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
Silver dichromate is primarily used as a reference compound in inorganic chemistry research, particularly in studies involving chromium and silver compounds. It is also utilized in analytical chemistry for the determination of various substances due to its oxidizing properties. Additionally, it finds applications in the preparation of other chromium compounds and in the field of electrochemistry. Its role as a reagent in organic synthesis, particularly in oxidation reactions, further highlights its versatility in chemical applications.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL1330D
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 431.76 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay Purity | ≥ 98% | 98.5% |
| Moisture Content | ≤ 0.5% | 0.3% |
| Residue on Ignition | ≤ 1% | 0.5% |
| Related Substances | None detected | None detected |
| Solubility | Insoluble in water | Insoluble |
The above product is expected to comply with 98% grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 98% | ≥ 98% | Decomposes at 200 °C | ≤ 0.5% | ≤ 1% | None detected | Insoluble in water |
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