COD analysis
Masks chloride interference in the dichromate COD test for water and wastewater.
Powder
Mercury Compounds · Extra Pure
Mercuric Sulphate
Also known as Mercury(II) sulfate and Mercuric sulfate
CAS7783-35-9
FormulaHgSO₄
MW296.65
PubChem24544
Mercury(II) sulphate with a minimum 99% assay, used to mask chloride in COD analysis.
Assay≥ 99%
GradeExtra Pure
MW296.65
ISO 9001:2015 certified supplierTested at NABL-accredited laboratories
Overview
About Mercuric Sulphate
Mercuric Sulphate is a white crystalline mercury(II) salt. It dissolves in hot dilute sulphuric acid to give a clear, colourless solution.
Environmental laboratories use it in the chemical oxygen demand (COD) test, where it binds chloride that would otherwise interfere with the result.
IdentityHgSO₄
- CAS number
- 7783-35-9
- Molecular formula
- HgSO₄
- Molecular weight
- 296.65
- PubChem CID
- 24544
- Appearance
- White crystalline powder
- Grade
- Extra Pure
Technical specification
Specification, Extra Pure grade
Every batch is released against these limits. Ask for the specification sheet with your quote.
| # | Test | Specification |
|---|---|---|
| 01 | Appearance (colour) | White |
| 02 | Appearance (form) | Crystalline powder |
| 03 | Solubility, 10% in hot 5N H₂SO₄ (turbidity) | Clear |
| 04 | Solubility, 10% in hot 5N H₂SO₄ (colour) | Colourless |
| 05 | Chloride (Cl) | Not more than 0.003% |
| 06 | Iron (Fe) | Not more than 0.001% |
| 07 | Heavy metals (as Pb) | Not more than 0.0005% |
| 08 | Copper (Cu) | Not more than 0.0005% |
| 09 | Potassium (K) | Not more than 0.002% |
| 10 | Sodium (Na) | Not more than 0.005% |
| 11 | Mercurous mercury (as Hg) | Not more than 0.15% |
| 12 | Assay (EDTA titration) | Not less than 99% |
Need a tighter limit or an extra test? Send us your specification with your enquiry.
Specification sheet (PDF)
Applications
Where Mercuric Sulphate is used
Catalysis
A catalyst for the hydration of alkynes, such as acetylene to acetaldehyde.
Electrochemistry
Used in specialist electrochemical cells and research.
Packing
Sealed, labelled and ready to ship
Every container carries the product name, batch number, dates and hazard labels. Other pack sizes are available on request.
250 gSealed bottle
500 gSealed bottle
Storage & handling
A mercury compound: store securely and handle with care
- Toxic. Keep in the original, tightly closed container in a cool, dry, well-ventilated and locked store.
- Protect from light, and keep away from acids, ammonia and other incompatible materials.
- Avoid raising dust. Wear gloves, eye protection and suitable respiratory protection, and wash after handling.
- Collect spills and waste for disposal as hazardous waste, following local rules. Shipped as dangerous goods.
Read the MSDS for full hazard, first-aid and disposal information.
Documents
Specification and safety documents
Ask for any of these and we will email them with your quote.
Questions
Frequently asked
Is your Mercuric Sulphate suitable for COD testing?
Yes. It is a white crystalline grade with low chloride (not more than 0.003%), which is what the COD method needs.
Which pack sizes can I order?
250 g and 500 g packs as standard. Tell us if you need a different size or a repeat schedule.
Can you supply against our own specification?
Send your specification with your enquiry. Our team will confirm which limits we can meet before you order.
Do you ship outside India?
Yes. We hold an Import Export Code and supply both domestic and export buyers. Mention the destination country in your enquiry so we can quote the right packing and documents.
Related products
Other mercury compounds
Enquire
Get a quote for Mercuric Sulphate
Tell us the quantity, pack size and destination. We will confirm price, availability and lead time, and send the documents you need.
Phone & WhatsApp+91 77530 58907
Emailankur.agrawal@spacorporation.in