Molekula
Mercury(II) sulfate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Mercury(II) sulfate is a toxic inorganic compound used in chemical synthesis and analytical chemistry. It serves as a catalyst for converting acetylene to acetaldehyde, as an electrolyte in primary batteries, and as a chloride-binding reagent in chemical oxygen demand testing of wastewater. It appears as a white or colorless crystalline solid and is highly hazardous due to its mercury content. CAS: 7783-35-9, Molecular formula: HgO4S, Molecular weight: 296.65 g/mol, Storage: Ambient, Signal word: Danger. Molekula supplies Mercury(II) sulfate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
100 g — £84.10 per pack ex VAT · £100.92 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline granular |
| Assay | ≥99% |
| Residue on Ignition | <0.03% |
| Iron (Fe) | <0.0005% |
| Sulfuric Acid Insoluble | <0.03% |
| Nitrate (NO3-) | <0.003% |
| Chlorine (Cl) | <0.003% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | II |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White granules or crystalline powder |
| Odour | Odorless |
Source: PubChem CID 24544 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 42523176 |
| CAS Number | 7783-35-9 |
| IUPAC Name | mercury(2+) sulfate |
| EC Number | 231-992-5 |
| Molecular Formula | HgO4S |
| Molecular Weight | 296.65 |
| Exact Mass | 297.9224 |
| SMILES | [O-]S(=O)(=O)[O-].[Hg+2] |
| InChIKey | DOBUSJIVSSJEDA-UHFFFAOYSA-L |
| InChI | InChI=1S/Hg.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2 |
| PubChem CID | 24544 |
| UN Number | UN1645 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28521090 |
| Tariff Code | 2852100000 |
Safety & GHS
-
Toxic
GHS06
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H300 +H310 + H330 Fatal if swallowed, in contact with skin or if inhaled
- H314 (sub cat. 1A) Causes severe skin burns and eye damage
- H317 May cause an allergic skin reaction
- H373 May cause damage to organs through prolonged or repeated exposure
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P263 Avoid contact during pregnancy/while nursing
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P284 Wear respiratory protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- MERCURIC SULFATE
- Mercuric sulphate
- Mercury bisulfate
- Mercury disulfate
- Mercury persulfate
- mercury sulfate
- Mercury sulfate (HgSO4)
- Mercury(II) sulfate (1:1)
- Mercury(II) sulphate
- Sulfate mercurique
Frequently asked questions
What is Mercury(II) sulfate commonly used for?
Mercury(II) sulfate is primarily used in analytical chemistry (e.g., as Denigès' reagent for detecting tertiary alcohols and olefins, and as a chloride-masking agent in chemical oxygen demand (COD) determination), some fungicides, and historical applications in medicine (now largely obsolete).
What is the chemical formula and molecular weight of Mercury(II) sulfate?
The chemical formula is HgSO₄ (written HgO4S in Hill notation), and the molecular weight is 296.65 g/mol.
How should Mercury(II) sulfate be stored?
Store in a tightly sealed container at ambient temperature, away from incompatible substances (e.g., metals, reducing agents) and moisture.
What grades of Mercury(II) sulfate does Molekula supply?
Molekula supplies ACS reagent grade and technical grade Mercury(II) sulfate; purity and specifications vary by grade—contact us for details.
Can Molekula supply Mercury(II) sulfate in bulk quantities?
Yes, we offer bulk quantities of Mercury(II) sulfate (minimum order quantities apply); pricing and lead times depend on grade and volume—inquire for specifics.
What documentation comes with an order of Mercury(II) sulfate?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS/SDS), and a packing slip with batch/lot details and hazard warnings.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.