Page 363 - Handbook of Hazardous Chemical Properties

SODIUM HYDRIDE 353
rapidly; Reactivity with Common Materials: No reactions; Stability During Transport: Stable;
Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of
Polymerization: Not pertinent.

SODIUM DICHROMATE
Chemical Designations - Symnyms: No common synonyms; Chemical Fonnula: N%Cr,O,,
Observable Characteristics - Physical State (as normally shipped): Solid; Color: Bright orange red;
Odor: Odorless.
Physical and Chemical Properties - Physical State at 15 “c and I atm. : Solid; Molecular Weight:
262.01; Boiling Point at I atm.: Decomposes; Freezing Point: 675, 357, 630; Critical Temperature:
Not pertinent; Critical Pressure: Not pertinent; Speczjk Gravity: 2.35 at 25 “C (solid); Vapor (Gas)
Density: Not pertinent; Ratio of Specific Heats of Vapor (Gas): Not pertinent; Latent Heat of
Vaporization: Not pertinent; Heat of Combustion: Not pertinent; Heat ofDecomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Approved dust mask,
protective gloves; goggles or face shield; Symptoms Following Exposure: Inhalation of dust or mist
causes respiratory irritation sometimes resembling asthma, nasal septal perforation may occur.
Ingestion causes vomiting, diarrhea, and (rarely) stomach and kidney complications. Contact with eyes
or skin produces local irritation: repeated skin exposure causes dermatitis; Gneral Treatment for
Exposure: INGESTION: have victim drink water or milk, do NOT induce vomiting; call a doctor.
SKIN OR EYE CONTACT: treat like acid burns; flush eyes with water for at least 15 min.; external
lesions can be scrubbed with a 2% solution of sodium thiosulfate; Toxicity by Inhalation (Threshold
Limit Value): Not pertinent; Short-Term Exposure Limits: Data not available; Toxicity by Ingestion:
Grade 3, LD,, 50-500 mglkg; Late Toxicity: Some suggestion of lung cancer; Vapor (Gas) Irritant
Characteristics: Dusts or mists may cause severe irritation of eye and throat and can cause eye and lung
injury. They cannot be tolerated even at low concentrations; Liquid or Solid Irritant Characteristics:
Severe skin irritant. Causes second- and third-degree burns on short contact and is very injurious to the
eyes; Odor Threshold Odorless.
Fire Hazards - Flash Point : Not flammable; Flammable Limits in Air (96): Not flammable; Fire
Extinguishing Agents: Flood with large amounts of water; Fire Extinguishing Agents Not To Be Used:
Not pertinent; Special Hazarak of&mbwion Products: Not pertinent; Behavior in Fire: Decomposes
to produce oxygen upon heating. May ignite other combustibles upon contact; Ignition Temperature :
Not flammable; Electrical Hazard: Not pertinent; Burning Rate: Not flammable.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: When
in contact with finely divided combustibles, such as sawdust, ignition may occur; Stability During
Transport: Stable; Neutmlizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not
pertinent; Inhibitor of Polymerization: Not pertinent.

SODIUM FIYDRIDE
Chemical Designations - Synonyms: No common synonyms; Chemical Formula: NaH.
Observable Characteristics - Physical State (as normally shipped): Solid; Color: Gray; Odor:
Odorless.
Physical and Chemical Properties -Physical Stme at 15 rand I am. :Solid; Molecular Weight Not
applicable; Boiling Point at I am. : Very high; Freezing Point: Not pertinent; Critical Temperature:
Not pertinent; Critical Pressure: Not pertinent; Specific Gravity: Data not available; Vapor (Gus)
Density: Not pertinent; Ratio of Specific Heats of Vapor (Gus): Not pertinent; Latent Heat of
Vaporization: Not pertinent; Heat of Combustion: Not pertinent; Heat OfDecomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Face shield; rubber
gloves; Symptoms Following Exposure: Moisture of body converts compound to caustic soda, which
irritates all tissues; General Treatment for Exposure: INGESTION: do NOT induce vomiting;
neutralize alkali in stomach by drinking dilute vinegar, lemon juice, or orange juice; call a physician.
SKIN CONTACT: brush off all particles at once and flood the affected area with water; Toxicity by
Inhalation (ThresholdLimit Value) : Not pertinent; Short-Term Exposure Limits: Not pertinent; Toxicity