Thorin indicator AR
- CAS Number
- 3688-92-4
- HSN Code
- 29319090
- Molecular Formula
- C16H11AsN2Na2O10S2
- Catalogue Number
- AL1506A
- Purity
- ≥ 98%
- Molecular Weight
- 576.30 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Thorin indicator AR is a specialized metal-ion indicator primarily utilized in complexometric titrations involving thorium, beryllium, and various other metals. This reagent is particularly notable for its ability to form stable complexes with metal ions, making it an essential tool in analytical chemistry. The compound is classified as an organoarsenic compound, which contributes to its unique properties and applications in titrations. With a high purity AR grade, Thorin indicator is suitable for laboratory use and meets the stringent requirements for analytical reagents.
Also known as Thorin, Sodium Thorin, Thorin Indicator.
- Catalogue No.
- AL1506A
- CAS Number
- 3688-92-4
- Molecular Formula
- C16H11AsN2Na2O10S2
- Molecular Weight
- 576.30 g/mol
- HSN Code
- 29319090
- Grade
- AR grade
- Product Form
- Substance
Thorin indicator AR appears as an orange-red crystalline powder, which is indicative of its chemical structure and composition. It is soluble in water, allowing for easy preparation of solutions for titration purposes. The compound has a molecular weight of 576.30 g/mol and a molecular formula of C16H11AsN2Na2O10S2. Its solubility in water facilitates its use in various aqueous titration methods, making it a versatile reagent in analytical applications.
- Appearance
- Orange-red crystalline powder
- Shelf Life
- 2 years
- Packaging
- 25 g in glass bottle
- Storage
- Store in a cool, dry place, away from light.
1.1 — Product identifier
- Chemical Name
- Thorin indicator AR
- Catalogue No.
- AL1506A
- Product form
- Substance
- CAS Number
- 3688-92-4
- EC Number
- 222-123-4
- Grade
- AR grade
- EC Index Number
- Not specified
- Chemical Formula
- C16H11AsN2Na2O10S2
- HSN Code
- 29319090
- Synonyms
- Thorin, Sodium Thorin, Thorin Indicator
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Metal-ion indicator for complexometric titrations
- 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; may cause harm to aquatic life.
3.1 — Substance
- Name
- Thorin indicator AR
- CAS No.
- 3688-92-4
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. 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 eye irritation.
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
- Toxic fumes may be released in a fire. 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 spill and prevent entry into waterways.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Collect spillage 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 care. Use appropriate personal protective equipment (PPE) including gloves and goggles.
- 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.
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 ventilation is inadequate.
9.1 — Information on basic physical and chemical properties
- Physical state
- Solid
- Colour
- Orange-red
- Odour
- Odourless
- Odour threshold
- Not applicable
- pH value
- Not applicable
- Relative evaporation rate (butylacetate=1)
- Not applicable
- Melting point
- Not specified
- Freezing point
- Not specified
- Boiling point
- Not specified
- Flash point
- Not applicable
- Auto-ignition temperature
- Not applicable
- Decomposition temperature
- Not specified
- Flammability (solid, gas)
- Not flammable
- Vapour pressure
- Not applicable
- Relative vapour density at 20°C
- Not applicable
- Density
- Not specified
- Solubility
- Soluble in water
- Log Pow
- Not specified
- 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. Avoid strong oxidizing 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 oxidizing agents, strong 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 irritation.
- Respiratory or skin sensitisation
- May cause allergic skin reaction.
- 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 3465
- UN-No. (IMDG)
- UN 3465
- UN-No. (IATA)
- UN 3465
- UN-No. (ADN)
- UN 3465
- UN-No. (RID)
- UN 3465
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Thorin indicator
- Proper Shipping Name (IMDG)
- Thorin indicator
- Proper Shipping Name (IATA)
- Thorin indicator
- Proper Shipping Name (ADN)
- Thorin indicator
- Proper Shipping Name (RID)
- Thorin indicator
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- 6.1
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
Thorin indicator AR is extensively used in analytical chemistry, particularly in complexometric titrations for the determination of metal ions such as thorium and beryllium. It is also employed in the analysis of sulfate ions, where it serves as a visual indicator of endpoint detection. The indicator is valuable in environmental testing, quality control in manufacturing processes, and research laboratories where precise metal ion quantification is required. Its application extends to educational settings for teaching complexometric titration techniques in chemistry courses.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL1506A
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 576.30 g/mol
| Test | Standard | Observed |
|---|---|---|
| Description | Brownish red powder | Brownish red powder |
| Absorption maxima in IPA | 480 - 490 nm | 486 nm |
| Suitability for determination of Ba | Passes test | Passes test |
The above product complies with AR grade
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| AR grade | ≥ 98% | Not specified | ≤ 1% | ≤ 0.5% | None detected | Soluble in water |
Related Products
View AllWhy buy from Alpha Chemika
What Our Scientific & Industrial Customers Say
“Speedy delivery, professional staff.”
“One shop stop for all laboratory chemicals requirements.”
“Exactly as advertised.”
“Alpha Chemika products are of excellent quality. Highly satisfied.”
“From ordering to shipping, every course of action was smooth. Timely delivery.”
“Completely satisfied with the products and services.”
“Speedy delivery, professional staff.”
“One shop stop for all laboratory chemicals requirements.”
“Exactly as advertised.”
“One shop stop for all laboratory chemicals requirements.”
“Exactly as advertised.”
“Alpha Chemika products are of excellent quality. Highly satisfied.”
“Exactly as advertised.”
“Alpha Chemika products are of excellent quality. Highly satisfied.”
“From ordering to shipping, every course of action was smooth. Timely delivery.”
“Alpha Chemika products are of excellent quality. Highly satisfied.”
“From ordering to shipping, every course of action was smooth. Timely delivery.”
“Completely satisfied with the products and services.”
“From ordering to shipping, every course of action was smooth. Timely delivery.”
“Completely satisfied with the products and services.”
“Speedy delivery, professional staff.”
“Completely satisfied with the products and services.”
“Speedy delivery, professional staff.”
“One shop stop for all laboratory chemicals requirements.”
FAQs
Common Questions About Laboratory Chemicals & Solutions
Find answers to common questions about laboratory chemicals, product selection, documentation, ordering, and technical support. Whether you are sourcing chemicals for research, testing, education, manufacturing, or industrial applications, these FAQs can help you make informed purchasing decisions.
Alpha Chemika offers a wide range of laboratory chemicals, reagents, solvents, and specialty products for research, testing, educational, pharmaceutical, and industrial applications.
Product selection depends on factors such as application, required purity, grade, specifications, and intended use. Our team can help you identify suitable products based on your technical requirements.
Yes. Relevant product information and technical documentation can be provided to help you evaluate products for quality, handling, compliance, and application requirements.
Yes. You can share your product list, required quantities, specifications, and delivery requirements with our team for a tailored quotation.
Yes. We support requirements from research laboratories, educational institutions, pharmaceutical companies, manufacturers, distributors, and other scientific and industrial organizations.
Connect with Us for Your Requirements
Have a specific product requirement or need help finding the right chemical for your application? Share your requirements with our team, and we will help you identify suitable products, specifications, quantities, and procurement options.
