Mercury(II) fulminate

  • Mercuric fulminate
Formula
(CHNO)2.Hg
Structure
Description
Silver-white heavy odorless metallic liquid.
Uses
In most industrial countries its use has been abandoned.

Registry Numbers and Inventories.
CAS
628-86-4
EC (EINECS/ELINCS)
211-057-8
EC Index Number
080-005-00-2
EC Class
Explosive; Toxic; Danger of cumulative effects; Dangerous for the Environment
RTECS
OW4055000
RTECS class
Other
UN (DOT)
0135
Beilstein/Gmelin
101642 (G)
RCRA
P065
Swiss Giftliste 1
G-6864
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C2HgN2O2
Formula mass
284.63
Melting point, °C
-38.9
Boiling point, °C
356.6
Vapor pressure, mmHg
0.0012
Density
3 g/cm3

Hazards and Protection.
Storage
If stored in air with high humidity, mercury fulminate deteriorates, becomes less sensitive, and can cause misfires. It is stored in magazines away from high explosives and blasting agents.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Do not breathe dusts and fumes from burning material. Wear self-contained breathing apparatus when fighting fires involving mercury fulminate. Wear boots, protective gloves, and goggles. Do not handle broken packages of mercury fulminate without protective equipment. If it contacts the body, wash away with copious amounts of water or soap and water. see also field han.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep spilled material wet. Wet spilled material before picking it up. Do not attempt to sweep up dry material.
Stability
Explosive above 85 C. Also shock sensitive.
Incompatibilities
Incompatible with the following: Acetylene, ammonia, chlorine dioxide, azides, calcium (amalgam formation), sodium carbide, lithium, rubidium, copper.

Fire.
Fire fighting
Dangerously explosive. Do not fight fires in a cargo of explosives. Evacuate area and let burn.

Health.
Poison_Class
2
Exposure effects
   Ingestion
Nausea, vomiting and diarrhea are possible if ingested.
   Inhalation
Cough, tachypnea, and wheezing are common after inhalation.
   Skin
Redness, swelling and pain may occur.

First aid
 
   Ingestion
Emesis is not indicated due to the irritant nature of these agents. Charcoal - not recommended; it may promote vomiting and make endoscopic evaluation difficult. Immediately dilute with 4 to 8 ounces (120 to 240 ml) of milk or water (not to exceed 4 ounces/120 ml in a child). Neutralization - neutralization is not indicated. Although these agents are irritants, and therefore should not produce tissue damage, it is almost impossible to assure that a particular substance under a particular set of circumstances would not cause damage. Therefore, each patient should be examined with the idea that mucous membrane damage might have occurred.
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility. Observe for development of clinical signs and symptoms. Treatment should include recommendations listed in the oral exposure section when appropriate.

Transport.
UN number
0135
Response guide
Hazard class
1.1A
Packing Group
II
 
USCG CHRIS Code
MFT
 
Std. Transport #
4901420