Sodium Thiosulphate Pentahydrate 99% 500g LOBA

Sodium Thiosulphate Pentahydrate 99% 500g is an important laboratory reagent used in analytical chemistry and various controlled chemical procedures. It is particularly well known for its role in iodometric titration, where thiosulfate ions react with iodine and allow quantitative determination of oxidizing substances.

The compound is commonly written as Na₂S₂O₃·5H₂O, indicating that each sodium thiosulfate unit is associated with five molecules of crystallization water. This hydrated form is widely used because of its practical handling characteristics and suitability for preparing laboratory solutions.

The LOBA 500g pack provides a useful quantity for routine laboratory applications, educational chemistry practicals, research work and analytical testing.

What is Sodium Thiosulphate Pentahydrate?

Sodium thiosulphate pentahydrate is the pentahydrate form of sodium thiosulfate. It is generally encountered as a colourless or white crystalline solid.

The chemical formula is:

Na₂S₂O₃·5H₂O

Its approximate molecular weight is 248.18 g/mol.

The compound contains sodium, sulfur, oxygen and water of crystallization. When dissolved in water, it produces a solution containing sodium and thiosulfate ions.

Importance in Analytical Chemistry Sodium Thiosulphate Pentahydrate

One of the most important uses of sodium thiosulfate is in iodometric titration. This technique is widely used in analytical laboratories to determine the concentration of certain oxidizing agents.

In a typical iodometric procedure, iodine is generated or liberated during the reaction. Sodium thiosulfate solution is then used to react with the iodine. The endpoint can commonly be detected using starch as an indicator.

This makes sodium thiosulfate an important reagent for quantitative redox analysis.

Iodometric Titration Sodium Thiosulphate Pentahydrate

Sodium thiosulfate is particularly useful because thiosulfate ions react quantitatively with iodine under suitable conditions.

The commonly represented reaction is:

I₂ + 2 S₂O₃²⁻ → 2 I⁻ + S₄O₆²⁻

This reaction forms the basis of many iodometric analytical procedures.

For accurate quantitative results, the sodium thiosulfate solution may need to be standardized against an appropriate primary standard or according to the laboratory’s validated analytical method.

Therefore, the stated 99% purity of the solid reagent does not by itself mean that a prepared solution can be used without standardization for every quantitative method.

Laboratory Applications Sodium Thiosulphate Pentahydrate

Sodium Thiosulphate Pentahydrate 99% 500g may be used for:

• Iodometric titration
• Redox titration
• Analytical chemistry
• Oxidizing-agent determination
• Chemical research
• Educational laboratory experiments
• Solution preparation
• Quality-control testing
• Selected photographic and technical applications

The exact suitability depends on the analytical method and required grade.

Use in Water Analysis Sodium Thiosulphate Pentahydrate

Sodium thiosulfate is commonly associated with analytical procedures involving oxidizing substances and can be encountered in certain water-analysis workflows.

In laboratory testing, thiosulfate chemistry can be useful when determining or controlling the presence of oxidizing species.

However, laboratories should follow their validated testing procedure rather than relying on a general product description.

Educational Laboratory Use Sodium Thiosulphate Pentahydrate

For university and college chemistry laboratories, sodium thiosulfate pentahydrate is an excellent reagent for teaching redox chemistry and titration techniques.

Students may learn:

• Iodometric titration
• Oxidation-reduction reactions
• Endpoint detection
• Starch indicator chemistry
• Molarity calculations
• Standardization of solutions
• Quantitative chemical analysis

বাংলাদেশের কলেজ ও university laboratory-তে এই reagent practical chemistry teaching-এর জন্য useful হতে পারে।

Students should always perform experiments under qualified supervision and follow the laboratory’s safety procedures.

Preparing Sodium Thiosulfate Solution

Sodium thiosulfate pentahydrate can be used to prepare laboratory solutions of a desired concentration.

The amount required depends on the target molarity and final volume. Because the product is a pentahydrate, calculations should use the molecular weight appropriate to Na₂S₂O₃·5H₂O, not anhydrous sodium thiosulfate.

For quantitative titration, simply weighing the required amount may not be sufficient. The prepared solution is commonly standardized according to the laboratory’s analytical procedure.

This is important because sodium thiosulfate solutions can undergo changes during storage and should be maintained according to appropriate laboratory practice.

Why 99% Purity Matters Sodium Thiosulphate Pentahydrate

The stated 99% purity indicates a high-purity chemical product suitable for many laboratory applications. However, users should always check the manufacturer’s detailed specification for the exact product.

Purity requirements can vary depending on the intended application.

For routine educational work, a general laboratory-grade reagent may be sufficient. For highly sensitive analytical procedures, the method may require a specific analytical grade or additional specification limits.

LOBA Sodium Thiosulphate Sodium Thiosulphate Pentahydrate

LOBA Sodium Thiosulphate is suitable for laboratories looking for a branded chemical reagent for appropriate laboratory applications.

When purchasing the product, users should verify the product label, catalogue number, purity specification, batch information and documentation where required.

For critical analytical work, the current manufacturer’s Certificate of Analysis should be consulted.

Storage Sodium Thiosulphate Pentahydrate

Sodium thiosulfate pentahydrate should be stored according to the manufacturer’s recommendations.

Good laboratory storage practice includes:

• Keep the container tightly closed.
• Store in a cool and dry suitable chemical-storage area.
• Protect the material from contamination.
• Maintain the original label.
• Avoid unnecessary exposure to unsuitable environmental conditions.
• Follow the current SDS.

The product should be handled using appropriate laboratory procedures.

Handling Precautions Sodium Thiosulphate Pentahydrate

Standard chemical-handling precautions should be followed when using sodium thiosulfate pentahydrate.

Recommended practices include:

• Wear appropriate laboratory gloves.
• Use safety goggles.
• Avoid unnecessary inhalation of dust.
• Avoid direct contact with eyes.
• Keep the working area clean.
• Wash hands after handling.
• Follow the manufacturer’s SDS and laboratory SOP.

Although sodium thiosulfate is commonly used in laboratories, users should always treat chemical reagents with appropriate care.

Research Applications Sodium Thiosulphate Pentahydrate

Research laboratories may use sodium thiosulfate in redox chemistry, analytical method development and other controlled experimental procedures.

Its ability to react with iodine makes it particularly valuable in studies involving iodine chemistry and quantitative redox analysis.

For research protocols, the product’s exact grade and purity should be checked against the requirements of the experimental method.

Quality Control Applications

In quality-control laboratories, sodium thiosulfate can be used in validated analytical procedures involving oxidizing agents.

For such applications, traceability is important. Laboratories should record relevant information such as:

• Product name
• Manufacturer
• Catalogue number
• Purity
• Batch number
• Preparation date
• Standardization data
• Expiry or retest information where applicable

This information helps maintain reliable analytical records.

Importance of Standardization

A very important point for laboratories using sodium thiosulfate in titration is standardization.

A solution prepared from 99% solid material should not automatically be assumed to have an exact analytical concentration. The solution may need to be standardized against a suitable reference material following the laboratory’s approved procedure.

This ensures that the actual concentration used in titration is accurately known.

500g Pack Advantage

The 500g pack size provides a practical quantity for laboratories with regular sodium thiosulfate requirements.

It can be suitable for:

• University chemistry laboratories
• Research institutions
• Pharmaceutical-related laboratories
• Quality-control laboratories
• Water-testing laboratories
• Educational institutions
• Industrial analytical laboratories

The quantity is large enough for repeated solution preparation while remaining manageable for routine laboratory inventory.

Use in Bangladesh

For scientific laboratories in Bangladesh, Sodium Thiosulphate Pentahydrate 99% 500g LOBA can be useful for analytical chemistry and educational laboratory applications.

Before purchasing, users should confirm the exact product specification and ensure that the purity and grade meet the intended method.

For laboratories performing quantitative analysis, appropriate standardization and documentation should be maintained.

Product Quality and Documentation

Professional laboratories should review the manufacturer’s documentation before using a chemical reagent in sensitive analytical work.

Relevant information may include:

• Product specification
• Purity
• Molecular formula
• Molecular weight
• Batch number
• Safety Data Sheet
• Certificate of Analysis
• Storage conditions

This documentation helps laboratory users determine whether the product is suitable for their specific application.

Specifications

FAQ

1. What is Sodium Thiosulphate Pentahydrate 99% 500g?

It is a laboratory-grade sodium thiosulfate pentahydrate reagent supplied in a 500g pack with a stated purity of 99%.

2. What is the chemical formula?

The chemical formula is Na₂S₂O₃·5H₂O.

3. What is the molecular weight?

The approximate molecular weight of sodium thiosulfate pentahydrate is 248.18 g/mol.

4. What is Sodium Thiosulphate used for?

It is widely used in analytical chemistry, especially iodometric titration and redox titration, as well as research and educational laboratory applications.

5. What is iodometric titration?

Iodometric titration is a quantitative analytical technique in which iodine participates in a reaction and sodium thiosulfate is commonly used to determine the amount of iodine produced or present.

6. Why is starch used with sodium thiosulfate?

Starch can form an intense colour with iodine and is commonly used as an indicator in iodometric titration to help identify the endpoint.

7. Does a 99% solid reagent guarantee an exact titration concentration?

No. For quantitative titration, a prepared sodium thiosulfate solution may need to be standardized according to the relevant laboratory method.

8. What is the pack size?

The product is supplied in a 500g pack.

9. Can this product be used in educational laboratories?

Yes, it can be suitable for chemistry practicals involving titration and redox reactions, subject to the product grade and the institution’s laboratory procedures.

10. How should Sodium Thiosulphate Pentahydrate be stored?

Keep the container properly closed and store it according to the manufacturer’s current SDS and storage recommendations.

11. What is the difference between thiosulfate and sulfate?

Thiosulfate and sulfate are different sulfur-containing ions. Thiosulfate is S₂O₃²⁻, while sulfate is SO₄²⁻. Their chemical properties and applications are different.

12. Is Sodium Thiosulphate Pentahydrate the same as Sodium Thiosulfate Pentahydrate?

Yes. “Thiosulphate” and “thiosulfate” are spelling variants of the same chemical compound.

13. Who can use this chemical?

Trained laboratory personnel, researchers, teachers and students working under appropriate supervision can use it for suitable laboratory applications.

14. Is this product suitable for analytical work?

Its suitability depends on the exact product grade and analytical method. For critical quantitative work, users should verify the manufacturer’s specification and CoA and standardize prepared solutions as required.

Safety & Quality Note: This product description is intended for general product information and SEO purposes. Always verify the current LOBA product specification, SDS, CoA, grade and batch information before using the reagent in a critical analytical procedure.