Page 369 - Handbook of Hazardous Chemical Properties

SODIUM SILICOFLUOIUDE 359

to soda lye: TSPP forms weekly alkali solution; Reactivity with Common Materials: When wet, MSP,
ASPP, and TSP corrodes mild steel or brass. Others are not considered corrosive; Stability During
Transport: All forms of sodium phosphate are stable. TSP tends to be hygroscopic and will form a hard
cake; Neutralizing Agents for Acidr and Caustics: For those grades of sodium hydroxide that form
acidic or alkali solutions, dilution by water is recommended; Polymerim'on: Not pertinent; Inhibitor
of Polymerization: Not pertinent.

SODIUM SILICATE
Chemical Designations - Synonyms: Water glass; Soluble glass; Chemical Formula: Na$iO,-NaSiO.,-
50.
Observable Characteristics - Physical State (m shipped): High-viscosity liquid; Color: Colorless;
Odor: Odorless.
Physical and Chemical Properties - Physical State at 15 "c and I am. : Liquid; Molecular Weighr:
Not applicable; Boiling Point at I atm.: Decomposes; Freezing Point: Not pertinent; Critical
Temperature: Not pertinent; Critical Pressure: Not pertinent; Specific Gravity: 1.1 - 1.7 at 20 "C
(liquid); Vapor (Gas) Specific Gravity: Not pertinent; Ratio of Specific Heats of Vqor (Gas): Not
pertinent; Latent Heat of Vaporizalion: Not pertinent; Heat of Combustion: Not pertinent; Heat of
Decomposition: Not pertinent.
Health Hazards Information -Recommended Personal Protective Equipment: Goggles or face shield;
Symptoms Following Exposure: If large doses are ingested, some irritation of mucous membranes may
occur, similar to that caused by caustic solution; GeneraZ Treatmentfor Exposure: INGESTION (large
doses): give water or milk, do NOT induce vomiting; Toxicity by Inhalation (ThreshoMLimit Value):
Not pertinent; Short-Tern Inhalation Limits: Not pertinent; Toxicity by Ingestion: Grade 2, LD,, 0.5
to 5 gkg (human); Late Toxicity: None; Vapor (Gas) Imtm Churacteristics: Non-volatile; Liquid or
Solid Irritant Characteristics: None; Odor lbeshold Not pertinent.
Fire Hazards - Fhh Point : Not flammable; Flammable Limits in Air (%): Not flammable; Fire
Extinguishing Agents: Not pertinent; Fire Extinguishing Agents Not To Be Used: Not pertinent; Special
Hazardr of Combustion Products: Not pertinent; Behavior in Fire: Not pertinent; Ignition Temperature
: Not flammable; Electrical Hazard: Not pertinent; Burning Rate: Not flammable.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reactions; Stability During Transport: Stable; Neutralizing Agents f0rAcid.s and Caustics: Not pertinent;
Polymrimion: Not pertinent; Inhibitor of Polymerim'on: Not pertinent.

SODIUM SILICOFLUORIDE
Chemical Designations - Synonyms: Salufer; Sodium fluosilicate; Sodium hexafluorosilicate; Chemical
Formula: NqSiF,.
Observable Characteristics - Physical State (as shipped): Solid; Color: White; Odor: None.
Physical and Chemical Properties - Physical State at 15 "c and I ann. : Solid; Molecular Weight:
188; Boiling Point at I am.: Not pertinent (decomposes); Freezing Point: Not pertinent; Critical
Temperature: Not pertinent; Critical Pressure: Not pertinent; Specific Gravity: 2.68 at 20 "C (solid);
Vapor (Gas) Specific Gravity: Not pertinent; Ratio of Specific Heats of Vapor (Gas): Not pertinent;
Latent Heat of Vqorization: Not pertinent; Heat of Combustion: Not pertinent; Heat ofDecomposition:
Not pertinent.
Health Hazards Information -Recommended Personal Protective Equipment: Dust respirator; goggles
or face shield; protective gloves; Symptoms Following Exposure: Inhalation of dust may irritate nose
and throat. Ingestion causes symptoms similar to fluoride poisoning; compound is highly toxic; initial
symptoms include nausea, cramps, vomiting, diarrhea, and dehydration; in severe cases, convulsions,
shock, and cyanosis are followed by death in 2-4 hr. Contact with eyes causes irritation. Contact with
skin causes rash, redness, and burning, sometimes followed by ulcer formation; General Treamzent for
Erposure: INHALATION move to fresh air. INGESTION seek medical attention; administer gastric
lavage with lime water, then give lime water or milk at frequent intervals. EYES: flush with water for
at least 15 min. SKIN: flush with water; wash with soap and water; Toxicity by Inhulation (Threshold