Silica Sol RX
- Part number
- RXSOL-19-1992-250
- Category
- Foundry Ind Chemicals
- Brand
- RXSOL
Overview
Silica Sol has many applications for paper, fibers, steel and catalysts. Most recently, it has been used by the semiconductor industry as a polishing agent for silicon wafers. Without the development of chemicals such as Silica Sol, the electronics industry would not be where it is today.
Silica Sol comes in a variety of types to suit your needs
Technical specifications
| COLOR | Milky white ||| |
|---|---|
| FORM | Liquid ||| |
| ODOR | Odorless |
| SOLUBILITY IN WATER | ||| |
Completely |||
| SPECIFIC GRAVITY | ||| |
|---|
ASTM E-70
| VISCOSITY | ||| |
|---|
ASTM D-2983
| BOILING POINT | ||| |
|---|
ASTM D-86
| FLASH POINT | ||| |
|---|
Applications
Silica Sol has a wide variety of industrial applications such as:
■Frictionizing
■Adhesion and coating
■ Binding and hardening
■Polishing
■Investment casting
■Impregnation filler
■Battery manufacturing
■Modification and strengthening of organic resins
Dosage and directions
Particles and Surface State
Silica Sol made by growing mono-dispersed, negatively charged, amorphous silica particles in water. OH ions exist at the surface of the particles with an electric double layer formed by alkali ions. Stabilization is achieved by the repulsion between the same negatively charged particles. Disturbance of the charge balance will cause the Silica Sol to aggregate, resulting in high viscosity or gelation of the solution.
Stability
Effects of pH change
The higher the concentration or the smaller the particle size, the greater the effect pH change will have on gelation time and stability. Silica Sol is very stable in the 2-4 and 8-10 pH ranges as illustrated in the diagram below. If a formulation or coating system has a neutral pH, or the formulation requires a Silica Sol with greater stability.
When the pH exceeds 10.5 with a strong alkali, such as caustic soda or sodium silicate, coagulation and dissolution of the silica particles occurs.
Long chain amines tend to cause Silica Sol to gel, but ethylamine, morpholine and other similar amines tend to stabilize the sol. Silica Sol maintains its stability for a fairly long time even when the pH of an alkaline Silica Sol grade is lowered by the addition of an acid. However, the gelation time differs with the kind of acids used for pH adjustment. The gelation time when the pH is changed by adding hydrochloric acid and acetic acid is shown below. Organic acids tend to provide better stability in terms of gelation time, depending on the SiO2 concentration and particle size.
Effects of salts and electrolytes
Polyvalent metal ions will cause Silica Sol to gelate. This is because the polyvalent ions interfer with the surface charge of the Silica Sol. The resulting charge imbalance causes the particles to agglomerate. The surface charge maintains the Silics Sol stability. The degree of gelation is not uniform, and varies depending on the type, concentration, temperature, etc. of the electrolyte used. Monovalent salts react slowly, but polyvalent salts such as alum, react quickly at pH 9 and higher. When the pH is lowered, the effect of alum and magnesium sulfate decreases. This electrolytic effect on Silica Sol is useful to speed up or slow down the gelation. The gelation time of SilicaSol at 52° C with addition of sodium chloride and sulfate are depicted below.
Compatibility with organic solvents
Alcohol, acetone and other polarized solvents can be mixed with Silica Sol. However, there is a mixing limit and gelation may occur. The compatibility with alcohol when the pH is changed is shown below as an example. Silica Sol can be mixed with alcohol at any proportion.
Compatibility with surfactants
Generally, Silica sol is compatible with anionic and nonionic surfactants. Compatibility is dependent on impurities and the composition of the surfactant. Incompatibility may cause the Silica Sol to gel or agglomerate. Therefore, it is important to select the surfactant carefully. Silica Sol is compatible with a wide range of surfactants.
Compatibility with emulsion resins and water soluble resins
Silica Sol is compatible with emulsion resins and water soluble resins having the same pH and electric charge. In the case of emulsion resin, gelation and separation may occur depending on which emulsifier is used. Therefore, it is important to select the emulsifier carefully. Silica Sol is also compatible with a wide range of emulsifiers.
Safety and SDS
Read the safety data sheet before handling. Wear suitable gloves and eye protection.
View safety data sheet
| Product Name | RXSOL-19-1992-250 |
| Product Type | Silica Sol |
Company Details:
RX MARINE INTERNATIONAL
105, A wing , BSEL , TECH PARK.
VASHI ,NEW BOMBAY 400703 INDIA
| Phone | +91 22 65113333 / 5555 / 9999 |
| Fax | +91 22 2781 1318 :::AOH :0091 9821214367 |
| rxsolchemicals@gmail.com |
Our hazard evaluation has identified the following chemical ingredient (s) as hazardous under OSHA’s Hazard Communication Rule, 29 CFR 1910.1200. Consult Section XIV for the nature of the hazard (s).
| INGREDIENTS (s) | CAS # | APPROX.% |
| Amorphous silica | 7631-86-9 | 40-70 |
| Water | 7732-16-5 | 30-60 |
Ingredients are listed on the TSCA Inventory of Chemical Substances. Those not identified are nonhazardous.
EMERGENCY OVERVIEW:
CAUTION
May cause irritation with prolonged contact.
Do not get in eyes, on skin, on clothing. Do not take internally. Use with adequate ventilation. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. After contact with skin, wash immediately with plenty of water. Protect product from freezing.
Wear suitable protective clothing.
Not flammable or combustible.
PRIMATRY ROUTES OF EXPOSURE: Eye, Skin
EYE CONTACT: May cause irritation with prolonged contact.
SKIN CONTACT: May cause irritation with prolonged contact.
INGESTION: Not a likely route of exposure. No adverse effects expected.
INHALATION: Not a likely route of exposure. Aerosols or product mist may irritate the upper respiratory tract.
SYMPTOMS OF EXPOSURE: Acute: A review of available data does not identify any symptoms from exposure not previously mentioned.
Chronic: A review of available data does not identify any symptoms form exposure not previously mentioned.
AGGRAVATION OF EXISTING CONDITIONS: Prolong inhalation of dust containing amorphous silica can increase lung injury in individual with emphysema, asthma or other lung disorders.
HUMAN HEALTH HAZARDS – CHRONIC: Prolonged inhalation of dust containing amorphous silica can increase lung injury in individuals with emphysema, asthma or other lung disorders.
EYE CONTACT: Flush affected area with water. If symptoms develop, seek medical advice.
SKIN CONTACT: Flush affected area with water. If symptoms develop, seek medical advice.
INGESTION: Do not induce vomiting without medical advice. If conscious, washout mouth and give water to drink. Get medical attention.
INHALATION: Remove to fresh air, treat symptomatically. If symptoms develop, seek medical advice.
NOTE TO PHYSICIAN: Based on the individual reactions of the patient, the physician’s judgment should be used to control symptoms and clinical condition.
FLASH POINT: Not flammable
EXTINGUISHING MEDIA: Not expected to burn. Use extinguishing media appropriate for surrounding fire.
FIRE AND EXPLOSION HAZARD: Not flammable or combustible.
SPECIAL PROTECTIVE EQUIPMENT FOR FIRE FIGHTING: In case of fire, wear a full face positive-pressure self contained breathing apparatus and protective suit
PERSONAL PRECAUTIONS: Restrict access to areas of appropriate until clean-up operations are complete. Stop or reduce any leaks if it is safe to do so. Do not touch spilled material. Ventilate spill area if possible. Use personal protective equipment recommended in Section 8 (Exposure Controls / Person al Protection)
METHODS FOR CLEANING UP: SMALL SPILLS: Soak up spill with absorbent material. Place residues in a suitable, covered , properly labeled container. Wash affected area.
LARGE SPILLS: Contain liquid using absorbent material, by digging trenches or by diking. Reclaim into recovery or salvage drums or tank truck for proper disposal. Contact an approved waste hauler for disposal of contaminated recovered material. Dispose of material in compliance with regulations indicated in Section 13 (Disposal Considerations).
ENVIRONMENTAL PRECAUTIONS: Do not contaminate surface water.
HANDLING: Avoid eye and skin contact. Do not take internally. Use with adequate ventilation. Do not breathe vapors / gases / dust. Ensure all containers are labeled. Keep the containers closed when not in use.
STORAGE CONDITIONS: Protect product from freezing. Store the containers tightly closed.
Store in suitable labeled containers.
SUITABLE CONSTRUCTION MATERIAL: HDPE (high density polyethylene). Compatibility with Plastic Materials can vary; we therefore recommend that compatibility is tested prior to use.
OCCUPATIONAL EXPOSURE LIMITS: This product contains amorphous, colloidal or fumed silica. Should the product become dried or misted such that inhalation of the material is possible, standard hygiene practices should be utilized to ensure that exposure to respirable particles is within the regulated limits.
ACGIH / TLV Substances(s) Amorphous Silica TWA: 10 mg/m3
OSHA / PEL Substances(s) Amorphous Silica TWA: 6 mg/m3
ENGINEERING MEASURES: The use of local exhaust ventilation is recommended to control emissions near the source. Laboratory samples should be handled in a fumehood. Provide mechanical ventilation of confined spaces.
RESPIRATORY PROTECTION: Where concentrations in air may exceed the limits given in this section, the use of a half face filter mask or air supplied breathing apparatus is recommended. A suitable filter material depends on the amount and type of
chemicals being handled. Consider the use of filter type: Particulate filter – HEPA, with a Particulate pre-filter. In event of emergency or planned entry into unknown concentrations a positive pressure, full-facepiece SCBA should be used. If respiratory protection is required, institute a complete respiratory protection program including selection, fit testing, training, maintenance and inspection.
HAND PROTECTION: When handling this product, the use of chemical gloves is recommended. The choice of work glove depends on work conditions and what chemicals are handled, but we have positive experience under light handling conditions.
Using gloves made from , Neoprene, Nitrile, PVC. Gloves should be replaced immediately if signs of degradation are observed. Breakthrough time not determined as preparation, consult PPE manufacturers.
SKIN PROTECTION: Wear standard protective clothing.
EYE PROTECTION: Wear chemical splash goggles.
HYGIENE RECOMMENDATIONS: Use good work and personal hygiene practices to avoid exposure. Keep an eye wash fountain available. Keep a safety shower available. If clothing is contaminated, remove clothing and thoroughly wash the affected area.
Launder contaminated clothing before reuse. Always wash thoroughly after handling chemicals. When handling this product never eat, drink or smoke.
HUMAN EXPOSURE CHARACTERIZATION: Based on our recommended product application and personal protective equipment, the potential human exposure is: LOW
| COLOR: Milky white | FORM: Liquid | ODOR: Odorless |
| SOLUBILITY IN WATER: | Completely | |
| SPECIFIC GRAVITY: | 1.38-1.40 @ 68°C | ASTM D-1298 |
| pH (NEAT) = | 9.8-10.2 | ASTM E-70 |
| VISCOSITY: | 25cps @ 77°F | ASTM D-2983 |
| BOILING POINT: | 100°C @ 760 mm Hg | ASTM D-86 |
| FLASH POINT: | None |
STABILITY: Stable under normal conditions.
HAZARDOUS POLYMERIZATION: Hazardous polymerization will not occur.
CONDITIONS TO AVOID: Freezing temperatures.
MATERIALS TO AVOID: None known.
HAZARDOUS DECOMPOSITION PRODUCTS: Under fire conditions: None known.
The following results are for the product:
ACUTE ORAL TOXICITY: Rat, LD50 > 15,000 mg/kg, Non-Hazardous
PRIMARY SKIN IRRITATION: Draize Score 0.4 / 8.0, Minimally irritating
PRIMARY EYE IRRITAITON: Draize Score 3.3 / 110, Practically non-irritating
SENSITIZATION: This product is not expected to be a sensitizer.
CARCINOGENICITY: None of the substances in this product are listed as carcinogens by the International Agency for Research on Cancer (IARC), the National toxicology Program (NTP) or the American Conference of Governmental Industrial Hygienists (ACGIH).
HUMAN HAZARD CHARACTERIZTION: Based on our hazard characterization, the potential human
hazard is: LOW
ECOTOXICLOGICAL EFFECTS:
The following results are for the product.
ACUTE FISH RESULTS:
| Species | Exposure | LC50 | Test Descriptor |
| Bluegill Sunfish | 96 hrs | >1,000 mg/l | Product |
| Rainbow Trout | 96 hrs | >1,000 mg/l | Product |
MOBILITY:
The environmental fate was estimated using a level III fugacity model embedded in the EPI (estimation program interface) Suite TM, proved by the US EPA. The model assumes a steady state condition between the total input and output. The level III model does not require equilibrium between the defined media. The information provided is intended to give the user a general estimate of the environmental fate of this product under the designed conditions of the models. If released into the environment this material is expected to distribute to the air, water and soil / sediment in the approximate respective percentages:
| Air | Water | Soil / Sediment |
| <5% | 30-50% | 50-70% |
The portion in water is expected to be soluble or dispersible.
BIOACCUMULATION POTENTIAL: This preparation or material is not expected to bioaccumulate.
ENVIRONEMNTAL HAZARD AND EXPOSURE CHARACTERIZATION: Based on our hazard characterization, the potential environmental hazard is : LOW
Based on our recommended product application and the product’s characteristics, the potential environmental exposure is: LOW
If released into the environment, see CERCLA / SUPERFUND in Section 15.
If this product becomes a waste, it is not a hazardous waste as defined by the Resource Conservation and Recovery Act (RCRA) 40 CFR 261, since it does not have the characteristics of Subpart C, nor is it listed under Subpart D. As a non-hazardous waste, it is not subject to federal regulation. Consult state or local regulation for any additional handling, treatment or disposal requirements. For disposal, contact a properly licensed waste treatment, storage, disposal or recycling facility.
SHIPPING INFORMATION
LAND TRANSPORT: Not Regulated.
AIR TRANSPORT (ICAO / IATA): Not Regulated.
MARINE TRANSPORT (IMDG / IMO): Not Regulated.
The following regulations apply to this product.
FEDERAL REGULATIONS:
OSHA’S HAZARD COMMUNICATION RULE, 29 CFR 1910.1200:
Based on our hazard evaluation, the following ingredient in this product is hazardous and the reason is shown below.
Amorphous silica = TWA 10 mg/m3 (total dust) ACGIH/TLV
Amorphous silica = TWA 6 mg/m3 OSHA/PEL
CERCLA/SUPERFUND, 40 CFR 117, 302:
Notification of spills of this product is not required.
SARA/SUPERFUND AMENDMENTS AND REAUTHORIZATION ACT OF 1986
(TITLE III) - SECTIONS 302, 311, 312 AND 313:
SECTION 302 - EXTREMELY HAZARDOUS SUBSTANCES (40 CFR 355):
This product does not contain ingredients listed in Appendix A and B as an Extremely Hazardous Substance.
SECTIONS 311 and 312 - MATERIAL SAFETY DATA SHEET REQUIREMENTS (40 CFR 370):
Our hazard evaluation has found this product to be hazardous. The product should be reported under the following EPA hazard categories:
XX Immediate (acute) health hazard
XX Delayed (chronic) health hazard
-- Fire hazard
-- Sudden release of pressure hazard
-- Reactive hazard
Under SARA 311 and 312, the EPA has established threshold quantities for the reporting of hazardous chemicals. The current thresholds are: 500 pounds or the threshold planning quantity (TPQ), whichever is lower, for extremely hazardous substances and 10,000 pounds for all other hazardous chemicals.
SECTION 313 - LIST OF TOXIC CHEMICALS (40 CFR 372): This product does not contain ingredients on the List of Toxic Chemicals.
TOXIC SUBSTANCES CONTROL ACT (TSCA): The chemical ingredients in this product are on the 8(b) Inventory List (40 CFR 710).
RESOURCE CONSERVATION AND RECOVERY ACT (RCRA), 40 CRF 261 SUBPART C & D: Consult Section XI for RCRA classification.
FEDERAL WATER POLLUTION CONTROL ACT, CLEAN WATER ACT, 40 CFR 401.15 (formally Sec. 307), 40 CFR 116 (formerly Sec. 311): None of the ingredients are specifically listed.
CLEAN AIR ACT, Sec. 111 (40 CFR 60), Sec. 112 (40 CFR 61, 1990 Amendments), Sec. 611 (40 CFR 82, CLASS I and II Ozone depleting substances): This product does not contain ingredients covered by the Clean Air Act.
Additional Information
NA = NOT APPLICABLE
NE = NOT ESTABLISHED
Rx Marine International provides the information contained herein in good faith but makes no representation as to its comprehensiveness or accuracy. This document is intended only as a guide to the appropriate precautionary handling of the material by a properly trained person using this product. Individuals receiving the information must exercise their independent judgment in determining its appropriateness for a particular purpose.
DISCLAIMER OF LIABILITY :The information in this SDS was obtained from sources which we believe are reliable. However, the information is provided without any warranty, express or implied, regarding its correctness. The conditions or methods of handling, storage, use or disposal of the product are beyond our control and may be beyond our knowledge. For this and other reasons, we do not assume responsibility and expressly disclaim liability for loss, damage or expense arising out of or in any way connected with the handling, storage, use or disposal of the product. This MSDS was prepared and is to be used only for this product. If the product is used as a component in another product, this MSDS information may not be applicable.
Availability
Silica Sol RX manufacturer supplier distributor in Mumbai, Kandla, Kolkata, Vizag, Chennai, India, Fujairah, Dubai UAE, Muscat Oman, Kenya Africa. Get the best quality of Silica Sol RX at a competitive price from us. We have ready stock of Silica Sol RX in India, UAE Gulf, Oman, Kenya Africa. Contact us for bulk as well as small orders.
