Educational content for trained professionals. Not a Safety Data Sheet, not medical advice. In an emergency, call your local poison control or emergency services immediately. Terms of use.
mercury sulfate
Also known as: Mercury(II) sulfate · MERCURIC SULFATE · 7783-35-9 · mercury sulfate
- CAS No.
- 7783-35-9
- Formula
- HgO4S
- Molar mass
- 296.66 g/mol
- PubChem CID
- 24544
Toxic
Harmful / Irritant
Health hazard
Environmental hazard
Summary
mercury sulfate (HgO4S), CAS 7783-35-9. Common in labs and industry. Read on for hazards, storage, PPE and mixing rules.
Background
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Physical properties
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Hazards
May be fatal even in small doses.
May cause skin, eye or respiratory irritation.
Serious long-term health effects (CMR, respiratory sensitizer).
Toxic to aquatic organisms.
Hazard statements
- H300: Fatal if swallowed [Danger Acute toxicity, oral]
- H310: Fatal in contact with skin [Danger Acute toxicity, dermal]
- H330: Fatal if inhaled [Danger Acute toxicity, inhalation]
- H373
- H400
- H410
- H301: Toxic if swallowed [Danger Acute toxicity, oral]
- H311: Toxic in contact with skin [Danger Acute toxicity, dermal]
- H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
- H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]
- H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
- H341: Suspected of causing genetic defects [Warning Germ cell mutagenicity]
Storage
Keep at room temperature, below 30 °C, out of direct heat.
Store somewhere well-ventilated and away from any ignition source.
Metal drums or tinted glass, tightly sealed.
Strong acids, strong bases and powerful oxidizers.
Personal protective equipment
Nitrile or butyl, at least 0.4 mm thick.
Safety goggles with side shields.
A2 organic-vapor cartridge if the room isn't well ventilated.
Occupational exposure limits (HSE)
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EU harmonised classification (ECHA C&L)
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Transport
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FDA recalls & enforcement
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Compatibilities
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Open comparator with mercury sulfatePractical safety notes
- Acute toxicity. Work under a fume hood, restrict access, keep a specific antidote plan available.
- Irritant / harmful. Ventilate the workspace and avoid skin contact.
- Serious health hazard (carcinogen, mutagen, reprotoxic, respiratory sensitizer). Substitute if possible; otherwise closed systems and medical surveillance.
- Environmental hazard. Do not release to sewers or waterways; collect for hazardous waste disposal.
Derived from the GHS classification shown above. These notes are generic guidance and do not replace the manufacturer's SDS or your local risk assessment.
FAQ
Is mercury sulfate flammable?+
mercury sulfate (CAS 7783-35-9) does not carry the GHS02 flame pictogram in our records. Always confirm with the manufacturer's SDS section 9 (flash point) before assuming a product is non-flammable.
What PPE should I wear when handling mercury sulfate?+
Safety glasses with side shields and nitrile gloves are the baseline. Work inside a fume hood or use a suitable respirator. Check SDS section 8 for material-specific breakthrough times.
How should mercury sulfate be stored?+
Store mercury sulfate (CAS 7783-35-9) in tightly closed original containers, in a cool, dry, well-ventilated area away from incompatible materials.
Is mercury sulfate dangerous for the environment?+
Yes. mercury sulfate carries the GHS09 environment pictogram. Do not release to drains, soil or waterways; collect residues for hazardous-waste disposal in line with local regulations.
Where can I find the official Safety Data Sheet for mercury sulfate?+
Official, up-to-date SDS documents are published by each manufacturer (Sigma-Aldrich, Merck, Thermo Fisher, VWR, Carl Roth, etc.) and by regulators such as ECHA and NIOSH. This page is an educational summary and does not replace the manufacturer's SDS.
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