Antimony

  • Stibium
Formula
Sb
Structure
Description
A silvery or gray solid in the form of dust. Odorless.
Uses
In manufacture of alloys, such as britannia or bobbitt metal, hard lead, white metal, type, bullets and bearing metal, in fireworks, for thermoelectric piles, coating metal, blackening iron.

Registry Numbers and Inventories.
CAS
7440-36-0
EC (EINECS/ELINCS)
231-146-5
RTECS
CC4025000
RTECS class
Tumorigen
UN (DOT)
2871
Merck
12,733
Beilstein/Gmelin
16305 (G)
RCRA
K061
Swiss Giftliste 1
G-1204
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
Sb
Formula mass
121.75
Melting point, °C
630
Boiling point, °C
1637
Vapor pressure, mmHg
0.002 (1000 C)
Vapor density (air=1)
4.2
Density
6.684 g/cm3 (20 C)
Solubility in water
Insoluble
Heat of fusion
18.7 kJ/mol
Heat of vaporization
112.7 kJ/mol

Hazards and Protection.
Storage
Keep away from heat and flame. Do not store in direct sunlight. Store in a cool, dry, well-ventilated area away from incompatible substances. Tarnishes in moist air.
Handling
Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation.
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 minimize contact with skin.
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
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Incompatible with ammonium nitrate, bromine, bromine trifluoride, bromoazide, chloric acid, chlorine, chlorine monoxide, chlorine trifluoride, fluorine, iodine, nitric acid, potassium nitrate, potassium permanganate, potassium peroxide, sodium nitrate, and sodium peroxide.
Decomposition
Stibine fumes.

Fire.
Autoignition, °C
330
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Material will burn in a fire. Dust can be an explosion hazard when exposed to heat or flame. Bulk metal is combustible in air at high temperatures. Extinguishing media: DO NOT USE WATER, carbon dioxide, OR FOAM DIRECTLY ON FIRE ITSELF. Use dry sand , graphite powder, dry sodium, chloride- based extinguishers.
Fire potential
Moderate in form of dust or vapor, when exposed to heat or flame.
Hazards
May react violently or explosively on contact with water. Some are transported in flammable liquids. May be ignited by friction, heat, sparks or flames. Some of these materials will burn with intense heat. Dusts or fumes may form explosive mixtures in air. Containers may explode when heated. May re-ignite after fire is extinguished.

Health.
Exposure limit(s)
OSHA PEL: TWA 0.5 mg/m3 NIOSH REL: TWA 0.5 mg/m3 *Note: PEL and REL also apply to other Sb compounds (as Sb). NIOSH IDLH: 50 mg/m3 (as Sb)
Poison_Class
2
Exposure effects
Prolonged or repeated skin contact may cause dermatitis. Chronic exposure may cause dizziness, dry throat, sleepiness, anorexia, and nausea. Chronic inhalation may result in liver, kidney, and cardiac changes.
   Ingestion
May cause severe digestive tract irritation with abdominal pain, nausea, vomiting and diarrhea. May cause slow pluse, low blood pressure, shallow breathing, and
   Inhalation
Dust is irritating to the respiratory tract. Inhalation of fumes may cause metal fume fever, which is characterized by flu-like symptoms with metallic taste, fever, chills, cough, weakness, chest pain, muscle pain and increased white blood cell count.
   Skin
Causes skin irritation. Chronic exposure may cause dizziness, dry throat, sleepiness, anorexia, and nausea. Chronic inhalation may result in liver, kidney, and cardiac changes.
   Eyes
Causes eye irritation. May cause conjunctivitis.

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.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. 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.

Transport.
UN number
2871
Response guide
Hazard class
6.1
Packing Group
III
 
USCG CHRIS Code
ATY
 
Std. Transport #
4925221