Sodium Tellurite
- CAS Number
- 10102-20-2
- HSN Code
- 28429090
- Molecular Formula
- Na2TeO3
- Catalogue Number
- AL1427A
- Purity
- ≥ 98%
- Molecular Weight
- 221.58 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Sodium tellurite (AR) is a selective inhibitory agent primarily utilized in bacteriological media for the detection and isolation of Corynebacterium diphtheriae. This compound is notable for its role in microbiological diagnostics, particularly in differentiating pathogenic strains from non-pathogenic ones. As an analytical reagent, it is classified as AR (Analytical Reagent) grade, ensuring high purity and reliability for laboratory applications. Sodium tellurite is also recognized for its toxicological properties, being a tellurium compound that requires careful handling in laboratory settings.
Also known as Tellurium dioxide sodium salt.
- Catalogue No.
- AL1427A
- CAS Number
- 10102-20-2
- Molecular Formula
- Na2TeO3
- Molecular Weight
- 221.58 g/mol
- HSN Code
- 28429090
- Grade
- AR (Analytical Reagent)
- Product Form
- Substance
Sodium tellurite appears as a white to pale yellow crystalline powder. It has a melting point of approximately 600 °C and is soluble in water, allowing for easy preparation of solutions for laboratory use. The density of sodium tellurite is around 3.2 g/cm³, and it has a relatively low vapor pressure, indicating stability under standard conditions. The compound is hygroscopic, meaning it can absorb moisture from the air, which should be considered during storage and handling.
- Appearance
- White to pale yellow crystalline powder
- Shelf Life
- 2 years
- Packaging
- Available in 100 g and 500 g glass bottles
- Storage
- Store in a cool, dry place, away from moisture and incompatible materials; keep tightly closed.
1.1 — Product identifier
- Chemical Name
- Sodium Tellurite
- Catalogue No.
- AL1427A
- Product form
- Substance
- CAS Number
- 10102-20-2
- EC Number
- 233-469-0
- Grade
- AR
- EC Index Number
- Not specified
- Chemical Formula
- Na2TeO3
- HSN Code
- 28429090
- Synonyms
- Tellurium dioxide sodium salt
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Selective agent in microbiological media
- 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
- Toxic if swallowed, harmful in contact with skin, and may cause respiratory irritation.
3.1 — Substance
- Name
- Sodium Tellurite
- CAS No.
- 10102-20-2
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. If irritation occurs, seek medical attention.
- 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 distress, skin irritation, and gastrointestinal discomfort.
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
- Non-flammable, but may emit toxic fumes in a fire.
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
- Contain spill and collect using appropriate protective equipment. Dispose of in accordance with local regulations.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Use appropriate personal protective equipment and absorb with inert material. 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 contact with skin and eyes. 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 cool, dry place, away from incompatible materials such as strong acids and bases.
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
- White to pale yellow
- Odour
- Odourless
- Odour threshold
- Not applicable
- pH value
- Not applicable
- Relative evaporation rate (butylacetate=1)
- Not applicable
- Melting point
- 600 °C
- Freezing point
- Not applicable
- Boiling point
- Not applicable
- Flash point
- Not applicable
- Auto-ignition temperature
- Not applicable
- Decomposition temperature
- Not applicable
- Flammability (solid, gas)
- Not flammable
- Vapour pressure
- Not applicable
- Relative vapour density at 20°C
- Not applicable
- Density
- 3.2 g/cm³
- Solubility
- Soluble in water
- Log Pow
- Not applicable
- Viscosity, kinematic
- Not applicable
- Viscosity, dynamic
- Not applicable
- Explosive properties
- Not explosive
- Oxidising properties
- Not oxidizing
- Explosive limits
- Not applicable
10.1 — Reactivity
- Reactivity
- Stable under normal conditions, but may react with strong acids and bases.
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 acids, strong bases, and oxidizing agents.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- Toxic if swallowed; LD50 (oral, rat) is approximately 200 mg/kg.
- Skin corrosion/irritation
- Causes skin irritation.
- Serious eye damage/irritation
- Causes serious eye irritation.
- Respiratory or skin sensitisation
- May cause allergic skin reactions in sensitive individuals.
- 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)
- UN 3284
- UN-No. (IMDG)
- UN 3284
- UN-No. (IATA)
- UN 3284
- UN-No. (ADN)
- UN 3284
- UN-No. (RID)
- UN 3284
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Sodium Tellurite
- Proper Shipping Name (IMDG)
- Sodium Tellurite
- Proper Shipping Name (IATA)
- Sodium Tellurite
- Proper Shipping Name (ADN)
- Sodium Tellurite
- Proper Shipping Name (RID)
- Sodium Tellurite
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
Sodium tellurite is primarily used in microbiology as a selective agent in culture media for the isolation and identification of Corynebacterium diphtheriae, the causative agent of diphtheria. Its inhibitory properties make it effective in suppressing the growth of competing microorganisms, thus facilitating the recovery of the target bacteria. Additionally, sodium tellurite is employed in various research applications, including studies on tellurium metabolism and its effects on microbial growth. It is also used in the preparation of tellurite agar, a medium that supports the growth of specific bacteria while inhibiting others.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL1427A
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 221.58 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 |
The above product is expected to comply with AR grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 98% AR | ≥ 98% | 600 °C | ≤ 0.5% | ≤ 0.1% | None detected | Soluble in water |
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