Safety Data Sheet For AgSil™ 25 Potassium Silicate Solution.pdf

AgSil™ 25 Potassium Silicate Solution

## Overview
- Product Name: AgSil™ 25 Potassium Silicate Solution
- Alternative Names: Potassium silicate solution (2.6–3.2 MR)
- CAS No.: 1312-76-1
- EINECS No.: 215-199-1
- Supplier: PQ Corporation, P.O. Box 840, Valley Forge, PA 19482, USA
- Emergency Contact: +1 800-424-9300

## Hazards Identification
- GHS Classification:
- H319: Serious eye damage/irritation (Category 2)
- H315: Skin corrosion/irritation (Category 2)
- Hazard Pictograms: Warning, Eye Danger, Skin Danger
- Signal Words: Warning
- Hazard Statements: Causes serious eye irritation, causes skin irritation.
- Precautionary Statements: P262, P280, P303+P361+P353, P305+P351+P338 (refer to Section 2 for details).

## Composition and Ingredients
- Regulation (EC) No. 1272/2008 (CLP):
- Ingredient: Silicic acid, potassium salt (29.1% w/w)
- CAS No.: 1312-76-1
- EINECS No./REACH Registration: 215-199-1 / Registered
- Hazard Symbols and Statements: H318 (Eye Damage), H335 (STOT SE 3), Water.

## First Aid Measures
- Eye Contact: Irrigate with eyewash solution or clean water for at least 15 minutes, hold eyelids apart. Seek immediate medical attention.
- Skin Contact: Wash affected skin with plenty of water. Symptoms may require medical attention.
- Inhalation: Remove patient to fresh air, keep warm and at rest. Obtain medical aid.
- Ingestion: Do not induce vomiting. Rinse mouth with water (200-300 ml) and seek immediate medical attention.

## Fire-Fighting Measures
- Suitable Extinguishing Media: All standard fire-fighting techniques.
- Unsuitable Extinguishing Media: None known.
- Special Hazards: Aqueous solution, non-combustible.

## Accidental Release Procedures
- Personal Protection: Wear suitable protective clothing, eye/face protection (refer to Section 8).
- Environmental Precautions: Prevent entry into drains, sewers, or watercourses. Advise authorities if soil, vegetation, or water bodies are contaminated.
- Cleanup Methods: Contain spillages with sand or earth, transfer to a suitable container for disposal or recovery.

## Handling and Storage
- Precautions: Avoid contact with eyes, skin, and clothing. Ensure adequate ventilation. Provide emergency showers and eye wash facilities.
- Storage Conditions: Temperature: 0-95°C. Loading temperature: 45-95°C. Use an adequate bund wall. Do not store in aluminum, fiberglass, copper, brass, zinc, or galvanized containers (refer to Section 7).

## Exposure Controls and Personal Protection
- Occupational Exposure Limit: No assigned limit; recommend 2 mg/m³ (15 min TWA) based on potassium hydroxide exposure limits.
- Engineering Controls: Preferable to prevent or control exposure through process enclosure, mechanical ventilation, and process condition adjustments.
- Personal Protective Equipment (PPE):
- Respiratory: Use if exposure exceeds occupational limit.
- Eye/Face: Chemical goggles (EN 166).
- Skin: Wear protective clothing and gloves (refer to Section 8.2.3 for details).

## Physical and Chemical Properties
- Appearance: Almost colorless liquid.
- Odor: Odourless.
- pH: Strongly alkaline (11-12).
- Boiling Point: 100°C.
- Density: 1.39 g/cm³ (20°C), 40.4 Bé, 11.56 lbs/gal.
- Solubility: Miscible in water.

## Stability and Reactivity
- Chemical Stability: Stable.
- Reactivity: May react violently with acids, aluminum, zinc, tin, and their alloys; generates heat when mixed with acid; can form hydrogen gas (refer to Section 10).
- Incompatible Materials: Avoid contact with ammonium salts, acids, and sugar residues (refer to Section 10).