| Product Name(s) |
Chalk |
| Product Number(s) |
510-11WHCLC, 510-11WHCLCB |
| Company |
Natural Pigments LLC
PO Box 112
Willits, CA 95490
United States of America |
| Technical Phone |
707-459-9998 |
| Fax |
408-516-9442 |
| Product Name |
Chalk |
| Synonyms |
Occurs in nature as limestone, chalk, marble, dolomite, aragonite, calcite and oyster shells. Also known as whiting, Paris white, Spanish white, Bologna chalk, calcium carbonate. |
| Component Name |
CAS No. |
% Composition Range |
OSHA PEL mg/m3 |
ACGIH TLV mg/m3 |
NIOSH mg/m3 |
| Chemical Formula |
|
|
TWA |
STEL |
TWA |
STEL |
TWA |
STEL |
Limestone
CaCO3 |
1317-65-3 |
>98% |
5 |
N.E.1 |
10 |
N.E. |
5 |
N.E. |
Silica, quartz
(naturally occurring component of limestone) |
14808-60-7 |
0.3% |
3 |
N.E.1 |
0.2 |
N.E. |
N.E. |
N.E. |
| 1) N.E. = None Established |
|
| Routes of Entry |
| Routes |
Inhalation: Yes
Skin: No
Ingestion: Yes |
| Ingestion |
| Acute Health Effects |
None anticipated. |
| Chronic Health Effects |
Chronic exposure to limestone dust at concentrations exceeding occupational exposure limits may cause pneumoconiosis (lung disease). |
Aggravation of
Pre-existing Conditions |
Medical conditions that may be aggravated by exposure: None anticipated. |
| |
Health effects described above are based on published scientific information available for review and evaluated on behalf of this product. Actual signs and symptoms experienced may vary due to conditions at the time of exposure. |
| After Inhalation |
Remove to fresh air. Obtain medical advice if required. |
| After Skin Contact |
Wash with warm water and mild soap. If irritation occurs, obtain medical advice immediately. |
| After Eye Contact |
Holding eyelids open, do not allow victim to rub their eyes. Gently flush eyes for 10 minutes with large quantities of water. Seek medical attention, if irritation develops or persists. |
| After Ingestion |
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 8 to 10 ounces (240 to 300 ml) of water to dilute material in stomach. Obtain medical advice immediately. |
| Fire |
Non-flammable. Not considered to be a fire hazard. |
| Explosion |
Not considered to be an explosion hazard. |
| Flash Points |
Not applicable |
| Auto-Ignition |
Not applicable |
| Flammable Limits |
Not applicable |
| Extinguishing Media |
Use water spray, dry chemical and CO2. Use appropriate extinguishing media for surrounding fire. |
| Special Fire Fighting Procedure |
None. |
| Spill Procedures |
Spills may be picked up with scoop and absorbent materials, and then transferred to containers. Wear protective clothing and gear during cleanup. |
| Containment Techniques |
This is a solid material and will not travel far from the spill location unless mechanically agitated. Therefore, no specific containment techniques are recommended outside of restricting access to the spill location. During spill cleanup, residual wash waters should be contained and collected for proper disposal. |
| Spill Response Equipment |
The following equipment is recommended for spill response:
• dustpan, shovel or scoop
• bags, drums or sacks for collection |
| Personal Protective Equipment |
Employees should utilize the following protective equipment when performing spill response activities:
• gloves (rubber or leather)
• cotton coveralls
• Safety goggles
• respiratory equipment recommended in Section 8 |
| Handling |
Measures should be taken to minimize and protect against airborne dust during cleanup operations, including use of respiratory protective equipment if necessary. |
| Storage |
Store in closed containers in a dry place separate from incompatible materials. |
| Disposal |
From a waste perspective, this product is not considered hazardous and may be disposed of as solid waste in accordance with applicable federal, state, provincial, and local regulations. |
| Engineering Controls |
Administrative and/or engineering control methods such as, but not limited to, process enclosure and exhaust ventilation may be necessary to control exposures to dust and/or gaseous organic compounds released at elevated temperatures. Supply sufficient replacement air to make up for air removed by exhaust systems. Selection of all personal protective equipment should be performed by an Industrial Hygienist or other qualified professional. |
| Respiratory Protection |
If engineering controls and work practices are not effective in controlling exposures, appropriate personal protective equipment including a NIOSH/OSHA approved respirator should be worn. |
| Skin Protection |
When repeated or prolonged contact with hands is likely, appropriate gloves should be used. |
| Eye/Face Protection |
Appropriate eye protection should be worn. Maintain eye wash fountain and quick-drench facilities in work area. |
| Work Hygiene Practices |
• Do not eat, drink, smoke, or perform other hand-to-mouth activities in product use or handling area.
• Wash thoroughly after handling this product. |
| Appearance |
Physical State: Solid
Color: White
Form: Powder |
| Odor |
No odor |
| Density |
2.7 g/ml |
| Ph Value |
Not applicable. |
| Boiling Point (at 760 mm Hg) |
Not applicable. |
| Melting Point |
550°C (1022°F) (decomposes) |
| Flash Point |
Not applicable. |
| Flammability |
Not applicable. |
| Autoignition Temperature |
Not applicable. |
| Explosive Properties |
Not applicable. |
| Explosion Limits |
Not applicable. |
| Vapor Pressure (mm Hg) |
Not applicable. |
| Vapor Density (Air=1) |
Not applicable. |
| Solubility in Water |
1.3 mg/100 g @ 18°C |
| Viscosity |
Not applicable. |
| Evaporation Rate (BuAc=1) |
Not applicable. |
| Stability |
Stable under ordinary conditions of use and storage. |
| Hazardous Decomposition Products |
Thermal decomposition of limestone beginning at 550°C (1022°F) can produce calcium oxide and carbon dioxide. Heating of this product above 244°C (471°F) may cause volatilization and/or thermal decomposition of processing aids, resulting in the gaseous release of trace amounts of organic compounds. |
Incompatibilities
(Materials to Avoid) |
Reacts with acids to liberate carbon dioxide. Ignites on contact with fluorine. Also incompatible with alum and ammonium salts. |
| Conditions to Avoid |
Incompatible materials and excessive temperatures. |
| Occupationally Relevant Routes of Exposure |
| Inhalation |
Dust may irritate the respiratory tract. Symptoms include sneezing and slight nose irritation. |
| Ingestion |
Ingestion of very large quantities may result in intestinal obstruction and/or constipation. |
| Skin |
Repeated or prolonged exposure may have a drying effect on the skin, and may also cause irritation. |
| Eye |
Irritation. Symptoms include watering and irritation. |
Effects and Hazards
of Chronic Exposure |
Chronic exposure to limestone dust at concentrations exceeding occupational exposure limits may cause pneumoconiosis (lung disease). This product contains crystalline silica (quartz) as an impurity. Chronic exposure to crystalline silica dust at concentrations exceeding occupational exposure limits may cause silicosis. The NTP’s Ninth Report on Carcinogens lists crystalline silica (respirable size) as a known human carcinogen. IARC concluded that there is sufficient evidence in humans for the carcinogenicity of inhaled (respirable) crystalline silica. |
| |
Limestone has been known since ancient times. It occurs widely in the earth's crust and can be dissolved from rocks and minerals into surface waters. Limestone and chalk have a variety of commercial and industrial uses, such as paint pigments, paper, building materials and plastics. |
Acute (short-term)
Ecological Effects |
No information available. |
Chronic (long-term)
Ecological Effects |
No information available. |
| Empty Containers |
From a waste perspective, this product is not considered hazardous. This product may be shipped in plastic or paper bags and plastic or steel pails. All residual material should be emptied and the containers must be disposed of in accordance with dederal (country-specific), state, and local regulations. |
| Not regulated. |
| TSCA |
This product primarily is natural calcium carbonate from limestone ore which is listed on the U.S. EPA TSCA inventory under Limestone, CAS# 1317-65-3. In addition, all other ingredients and/or processing aids also are on the TSCA inventory. |
| Canada Domestic Substances List |
By virtue of its status as a “substance occurring in nature,” ground limestone is considered to be on the Canadian Domestic Substances List. In addition, all other ingredients and/or processing aids also are on the DSL. |
| CONEG |
Being derived from limestone ore, this product may contain incidental trace levels of naturally occurring metals. However, no metals are intentionally added and this product complies with the CONEG requirement of <100 ppm of Cd, Cr+6, Pb, and Hg. |
| Ozone-Depleting Chemicals |
This product does not contain, nor is it produced with, any U.S. EPA-defined Class I or Class II ozone-depleting chemicals. |
| Food Drug Admininstration |
This product may be used as an indirect food additive in food packaging applications under 21 CFR (FDA) 174.5, 175.300, and 178.3297. It does not qualify as a substance permitted for direct addition to human food or animal feed. |
| Product Name |
Chalk |
| Ingredients |
Limestone (Calcium Carbonate) |
| Signal Word |
|
| Hazard Description |
Chronic exposure to limestone dust at concentrations exceeding occupational exposure limits may cause pneumoconiosis (lung disease). This product contains crystalline silica (quartz) as an impurity. Chronic exposure to crystalline silica dust at concentrations exceeding occupational exposure limits may cause silicosis. |
Precautionary
Measures |
Avoid prolonged inhalation and contact with the skin, eyes, and mucous membranes. |
First aid
Procedures |
Ingestion: If victim is conscious and alert, give large amounts of water.
Eyes: Holding eyelids open, gently flush eyes for 15 minutes with large quantities of water. Do not
allow the victim to rub their eyes.
Skin: Wash area with soap and water. |
| Fire Instructions |
This material is not flammable; however, it may release carbon dioxide of lead if involved in a fire. Select fire extinguishment media for surrounding materials. |
Spill or Leak
Procedures |
Limit foot and vehicular traffic to minimize dispersion. Use a scoop or shovel for spill clean-up. |
Handling and
Storage Instructions |
Store in a cool, dry, well-ventilated area. Specific instructions concerning directions for use and handling may be found in the MSDS or may be supplied by the manufacturer. |
| HMIS Ratings |
Health: 1 (Low)
Flammability: 0 (None)
Reactivity: 0 (None)
Personal Protection: E |
| NFPA Ratings |
Health: 1 (Low)
Flammability: 0 (None)
Reactivity: 0 (None) |
| Date |
1 June 2008 |
| Disclaimer |
The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. Natural Pigments, LLC shall not be held liable for any damage resulting from handling or from contact with the above product.
Copyright 2005-2008 Natural Pigments, LLC. License granted to make unlimited paper copies for internal use only. |