Synonyms: Silica, amorphous; Silica, precipitated and gel (CAS # 112926-00-8)

(OSHA)

CAS No.: Not applicable.

Molecular Weight: Not applicable.

Chemical Formula: SiO2. XH20 + CoC1₂

See detail drawings

--------------------------

SAFETY DATA Ratings (Provided here for your convenience)

Health Rating: - Moderate

Flammability Rating: - None

Reactivity Rating: - None

Contact Rating: Slight

Lab Protective Equip: GOGGLES; LAB COAT; VENT HOOD; PROPER  GLOVES

Storage Colour code: Orange (General Storage)

This product contains synthetic amorphous silica; not to be confused with crystalline silica such as quartz, cristobalite or tridymite or with diatomaceous earth or other naturally occurring forms of amorphous silica that frequently contain crystalline forms.

Inhalation:

May cause dryness and irritation to mucous membranes, nose, and throat. Symptoms 

may include coughing, sore throat, and wheezing.

No adverse effects expected.

May cause irritation with dryness and abrasion.

May cause irritation, redness and pain.

Repeated exposure may cause symptoms similar to those listed for acute effects.

Synthetic amorphous silica does not produce silicosis> Prolonged exposure to cobalt has been shown to cause cancer in laboratory animals.

No information found.

Remove to fresh air. Get medical attention for any breathing difficulty.

Give several glasses of water to drink to dilute. If large amounts were swallowed, get medical advice.

Immediately flush skin with plenty of soap and water for at least 15 minutes.

Remove contaminated clothing and shoes. Wash clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention if irritation develops.

Eye Contact:

Immediately flush eyes with plenty of water for at least 15 minutes, lifting upper and lower eyelids occasionally. Get medical attention if irritation persists.

Not considered to be a fire hazard.

Not considered to be explosion hazard.

Use any means suitable for extinguishing surrounding fire.

Use protective clothing and breathing equipment appropriate for the surrounding fire.

Ventilate area of leak or spill. Wear appropriate personal protective equipment as specified in Section 8. Spills: Sweep up and containerise for reclamation or disposal.

Vacuuming or wet sweeping may be used to avoid dust dispersal. Regulations require reporting spills and releases to soil, water and air in excess of reportable quantities.

Keep in a tightly closed container, stored in a cool, dry, ventilated area and labelled accordingly. Protect against physical damage. When pouring into a container of flammable liquid, ground both containers electrically to prevent a static electric spark. Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.

Silica (synthetic, amorphous):

-   OSHA Permissible Exposure Limit (PEL) -

-   80/(%SiO2) mg/m³ (TWA) for amorphous silica, including natural diatomaceous earth.

-   ACGIH Threshold Limit Value (TLV) -

10 mg/m³ (TWA) for amorphous precipitated silica and amorphous silica gel.

For Inorganic Cobalt Compounds:

-   ACGIH Threshold Limit Value (TLV) -

0.02 mg/m³ (TWA) as Co, A3: Animal carcinogen.

A system of local and/or general exhaust is recommended to keep employee exposures below the Airborne Exposure Limits. Local exhaust ventilation is generally preferred because it can control the emissions of the contaminant at its source, preventing dispersion of it into the general work area. Please refer to the ACGIH document, Industrial ventilation, A Manual of Recommended practices, most recent edition, for details.

If the exposure limit is exceeded, a half-face dust/mist respirator must be worn suitable for the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest.

WARNING: Air-purifying respirators do not protect workers in oxygen-deficient atmospheres. Respirators must meet the requirements of European Standard EN149 FF3SL. Suitable for use under COSHH, CAW, CLAW and IRR.

Wear protective gloves and clean body-covering clothing.

Use chemical safety goggles. Maintain eye wash fountain.

Physical and Chemical Properties

Appearance:

Blue crystals.

Odourless.

Silica gel base is insoluble in water; cobalt chloride may leach out.

Specific Gravity: 2.1

PH: 5.5-9.0 (in 5% slurry)%

Volatiles by volume @ 21ºC (70ºF): 0

No information found.

Melting Point:

No information found.

No information found.

No information found.

No information found.

Stable under ordinary conditions of use and storage.

Oxides of carbon and silicone may be formed when heated to decomposition.

Will not occur.

Reacts with hydrogen fluoride, fluorine, oxygen difluoride, chlorine trifluoride, strong acids, strong bases, and oxidizers.

Conditions to Avoid:

Moisture, extreme heat, and incompatibles.

Toxicological Data:

No LD50/LC50 information found relating to normal routes of occupational exposure.

Carcinogenicity:

Cobalt and its compounds have been shown to cause cancer in laboratory animals.

Ecological Information

For Silica Gel (synthetic amorphous): When released into the soil, this material is not expected to biodegrade. When released into water, this material is not expected to biodegrade.

For Silica Gel (synthetic amorphous): This material is not expected to be toxic to aquatic life.

Whatever cannot be saved for recovery or recycling should be managed in an appropriate and approved waste disposal facility. Processing, use or contamination of this product may change the waste management options. Local disposal regulations may differ from national disposal regulations.

Contact your local Environmental Agency for closest Waste Management site. Dispose of container and unused contents in accordance with national and local regulations.

Not regulated.

-----------\ Chemical Inventory Status - Part 1 \-----------

EC

No

No

-----------\ Federal, State & International Regulations - Part 1 \-----------