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7783-33-7

Name NESSLER'S REAGENT
CAS 7783-33-7
EINECS(EC#) 231-990-4
Molecular Formula HgI4K2
MDL Number MFCD00049656
Molecular Weight 786.4
MOL File 7783-33-7.mol
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Chemical Properties

Definition Solution of mercuric iodide in potassium iodide.
Appearance light yellow liquid
Melting point  120-127 °C(lit.)
Boiling point  105°C
density  1.16 g/mL at 20 °C
Fp  >230 °F
solubility  very soluble in H2O; soluble in ethanol,ethyl ether, acetone
form  Liquid
color  Yellow to orange
Specific Gravity 1.097
Odor Odorless
Stability: Stable, but light sensitive. Incompatible with strong oxidizing agents.
Water Solubility  Soluble in water.
Sensitive  Hygroscopic
Merck  13,7773
Exposure limits ACGIH: TWA 0.025 mg/m3 (Skin)
NIOSH: IDLH 10 mg/m3; TWA 0.05 mg/m3; Ceiling 0.1 mg/m3
InChIKey OPCMAZHMYZRPID-UHFFFAOYSA-J
Uses
Detecting the presence of ammonia, particularly in very small amounts.
EPA Substance Registry System Potassium mercuric iodide (7783-33-7)
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Safety Data

Hazard Codes  T,N,T+
Risk Statements 
Safety Statements 
RIDADR  UN 3287 6.1/PG 3
WGK Germany  3
RTECS  OU9670000
F  8-30
TSCA  Yes
HazardClass  6.1
PackingGroup  II
HS Code  28521000
Safety Profile
A poison. Moderately toxic by skin contact and intraperitoneal routes. When heated to decomposition it emits very toxic fumes of Hg, K2O, and I-. See also MERCURY.
Hazardous Substances Data 7783-33-7(Hazardous Substances Data)

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