Mercuric sulfate

  • Mercury bisulfate
  • Mercury(II) sulfate
Formula
HgSO4
Structure
Description
Odorless white granules or crystalline powder.
Uses
Electrolyte for primary batteries, with sodium chloride for extracting gold and silver from roasted pyrites, as reagent for wine coloring, barbital, and cysteine.

Registry Numbers and Inventories.
CAS
7783-35-9
EC (EINECS/ELINCS)
231-992-5
EC Index Number
080-002-00-6
EC Class
very toxic, dangerous for the environment
R 26/27/28 33 50/53
S 13 28 45 60 61
RTECS
OX0500000
RTECS class
Other
UN (DOT)
1645
Merck
13,5914
Beilstein/Gmelin
32386 (G)
RCRA
D009
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
HgO4S
Formula mass
296.65
Melting point, °C
850
Vapor pressure, mmHg
0.0012
Vapor density (air=1)
17.
Odor Threshold Odor threshold Odorless.
Density
5.995 g/cm3 (21 C)
Solubility in water
Decomposes
Heat of fusion
6.0 kJ/mol

Hazards and Protection.
Storage
Do not store in direct sunlight. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Poison room locked.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Store protected from light.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.
Disposal code
20
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Substance decomposes when exposed to water, violently reacts with hydrogen chloride, and is corrosive to many metals (including aluminum, copper, iron, magnesium, lead, and zinc).
Decomposition
Oxides of sulfur, mercury/mercury oxides.

Fire.
Autoignition, °C
> 450
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Combustion generates toxic fumes. Extinguishing media: Use foam, dry chemical, or carbon dioxide. Use agent most appropriate to extinguish fire.
Fire potential
Nonflammable.
Combustion products
None
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
NIOSH REL: C 0.1 mg/m3 [skin] OSHA PEL: C 0.1 mg/m3 10 mg/m3 (as Hg)
Poison_Class
2 (Very strong toxins)
Exposure effects
Chronic inhalation and ingestion may cause effects similar to those of acute inhalation and ingestion. May cause anemia and other blood cell abnormalities. Repeated exposure may cause central nervous system damage.
   Ingestion
Harmful if swallowed. May cause kidney damage. May cause severe digestive tract irritation with abdominal pain, nausea, vomiting and diarrhea. May cause corrosion and permanent tissue destruction of the esophagus and digestive tract. May cause adverse nervous system effects and possible
   Inhalation
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema. May cause effects similar to those described for ingestion.
   Skin
May be absorbed through the skin. May cause severe irritation and possible burns.
   Eyes
Contact may cause severe eye irritation and possible eye damage.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1645
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
MRS
 
HS Code
2833 29 70
 
Std. Transport #
4923257