Silicic acid, potassium salt

  • Potassium silicate
  • Soluble potash glass
Formula
Unspecified
Description
Clear, colorless, aqueous solution.
Uses
As binder (eg, in carbon electrodes, lead pencils, protective coatings, insol pigments), detergent.

Registry Numbers and Inventories.
CAS
1312-76-1
EC (EINECS/ELINCS)
215-199-1
Beilstein/Gmelin
NA
EPA OPP
72606
Swiss Giftliste 1
G-1260
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Boiling point, °C
>100
Vapor pressure, mmHg
<17
Density
1.39 g/cm3 (20 C)

Hazards and Protection.
Storage
Keep in a cool, dry location. Keep container tightly sealed.
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
Goggles or a face shield should be used in handling these alkaline products, & the granules should be added slowly to the soln when dissolving. Sol silicates.
Respirators
If overexposure has been determined or documented, a NIOSH/MSHA jointly approved air supplied respirator is advised in absence of proper environmental control. OSHA NIOSH/MSHA respirators under specified conditions.
Small spills/leaks
Small Spill - Absorb liquid on vermiculite, floor absorbent or other absorbent material. Flush area with water. Large Spill - Persons not wearing protective equipment should be excluded from area of spill until clean-up has been completed. Stop spill at source, dike area of spill to prevent spreading, pump liquid to salvage tank. Remaining liquid may be taken up on sand, clay, earth, floor absorbent, or other absorbent material and shoveled into containers. Spills of this material are very slippery. Flush area with water.
Stability
Stable.
Incompatibilities
Strong oxidizing agents.
Decomposition
No data.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use agent most appropriate to extinguish fire.

Health.
Poison_Class
4
Exposure effects
Symptoms of exposure to this material through breathing, swallowing, and/or passage of the material through the skin may include: irritation (nose, throat, airways).
   Ingestion
Burns of the esophagus and less commonly the stomach may occur after caustic ingestion; the absence of oral mucosal injury does not reliably exclude esophageal burns. Patients with stridor, drooling or vomiting are more likely to have esophageal burns.
   Inhalation
Stridor, dyspnea, upper airway injury, and pulmonary edema, especially following inhalation of vaporized caustics, may occur.
   Skin
Severe skin irritation and/or burns may occur.
   Eyes
Can cause eye irritation. Symptoms include stinging, tearing, redness, and swelling of eyes.

First aid
 
   Ingestion
Mucosal if no respiratory compromise is present, dilute immediately with milk or water; no more than 8 ounces in adults and 4 ounces in children. Gastric ipecac contraindicated. Consider insertion of a small, flexible nasogastric or orogastric tube to suction gastric contents after recent large ingestions; the risk of further mucosal injury must be weighed against potential benefits.
   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
Remove contaminated clothes. Irrigate exposed skin with copious amounts of water for at least 15 minutes or longer, depending on concentration, amount and duration of exposure to the chemical. A physician may need to examine the area if irritation or pain persist.
   Eyes
Home irrigation - exposed eyes should be irrigated with copious amounts of water for at least 30 minutes. An examination should always be performed. Ophthalmologic consultation should be obtained. Medical facility: irrigate with sterile 0.9% Saline for at least an hour or until the cul-de-sacs are free of particulate matter and returned to neutrality (confirm with pH paper).

Transport.