Mercury sulfate , 96% , 7783-36-0
Synonym(s):
Mercurous sulfate
CAS NO.：7783-36-0
Empirical Formula: Hg2O4S
Molecular Weight: 497.24
MDL number: MFCD00016138
EINECS: 231-993-0
PRODUCT Properties
| Melting point: | decomposes [AES93] |
| Density | 7.56 g/mL at 25 °C(lit.) |
| solubility | soluble in dilute HNO
3 |
| form | Powder |
| color | White, pale yellow or beige |
| Water Solubility | 0.05g/100g H2O [KIR81]; soluble dilute HNO3 [MER06] |
| Merck | 13,5924 |
| Solubility Product Constant (Ksp) | pKsp: 6.19 |
| CAS DataBase Reference | 7783-36-0(CAS DataBase Reference) |
| EPA Substance Registry System | Sulfuric acid, dimercury(1+) salt (7783-36-0) |
Description and Uses
Mercury(I) sulfate, commonly called mercurous sulfate, Hg2SO4, is a metallic compound that forms a white, pale yellow or beige powder. It is a metallic salt of sulfuric acid produced by replacing both hydrogen atoms with mercury(I). It is very toxic; it can be fatal if inhaled, ingested, or absorbed by skin. The crystal structure of mercurous sulfate is made up of Hg2 21 dumbbells and SO4 22 anions as main building units. The Hg2 21 dumbbell is surrounded by 4 oxygen atoms with Hg?O distance between 2.23 and 2.93 ? , while the Hg-Hg distance is about 2.50 ? . Mercury(I) sulfate has the mercury atoms arranged in doublets with a bond distance of 2.50 ? . The metal atom doublets are oriented parallel to the a-axis in a unit cell. Mercury doublets form part of infinite chain SO4-Hg-Hg-SO4-Hg-Hg-... The Hg-Hg-O bond angle is 165° ± 1° . The chain crosses the unit cell diagonally. The mercury sulfate structure is held together by weak Hg-O interactions. The SO4 does not act as a single anion, but rather coordinated to the mercury metal.
For making electric batteries; with zinc sulfate in the standard Clark cell and with cadmium sulfate in the standard Weston cell.
Safety
| Symbol(GHS) |    GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H300+H310+H330-H373-H410 |
| Precautionary statements | P260-P262-P280-P302+P352+P310-P304+P340+P310 |
| Hazard Codes | T+,N |
| Risk Statements | 26/27/28-33-50/53 |
| Safety Statements | 13-28-45-60-61 |
| RIDADR | UN 1645 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | OX0480000 |
| F | 8 |
| HazardClass | 6.1(a) |
| PackingGroup | II |
| HS Code | 28521000 |
| Hazardous Substances Data | 7783-36-0(Hazardous Substances Data) |
