Product Identification

Product Name

Silicic acid sodium salt

Synonyms

Silicic acid, sodium salt
Sodium siliconate
Soluble glass
Waterglass

CAS

1344-09-8

Formula

Na2O3Si

Molecular Weight

122.06

EINECS

215-687-4

RTECS

VV9365000

RTECS Class

Primary Irritant

Beilstein/Gmelin

19151 (G)

Physical and Chemical Properties

Appearance

A powdered or flaked solid.

Solubility in water

Slightly soluble

Vapor Pressure

18

Density

1.37 g/cm3

Usage

Lining bessemer converters, acid concentraters, manufacture grindstones, abrasive wheels (as binder only).

Refractive Index

1.512 - 1.514

First Aid Measures

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).

Handling and Storage

Storage

Store in a cool, dry location in a sealed container.

Handling

Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed.

Hazards Identification

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

See Inhalation.

Hazards

Oxides from metallic fires are a severe health hazard. Fire may produce irritating, corrosive and/or toxic gases.

UN (DOT)

1759

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective gloves, clothing and goggles.

Respirators

Wear positive pressure self-contained breathing apparatus (SCBA).

Poison Class

3

Fire Fighting Measures

Fire Fighting

Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as fog. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.

Fire Potential

Flammable solid.

Accidental Release Measures

Small spills/leaks

Build dikes to contain flow as necessary. Neutralize spilled material with crushed limestone, soda ash, or lime.

Stability and Reactivity

Incompatibilities

Reacts violently with fluorine. Avoid contact with: acids, reactive metals such as aluminum and magnesium, zinc.

Stability

Stable.Stable at normal temperatures and pressures.

Decomposition

Silicates.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

1759

Hazard Class

8

Packing Group

I; II; III