Oil well drilling fluid additive. Dispersant.

MATERIAL SAFETY DATA SHEET

MSDS NO.

10288 Trade Name: TANNATHIN* Revision Date: 09/13/2004

1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Trade Name:

TANNATHIN*

Chemical Family:

Lignite (Leonardite).

Product Use:

Oil well drilling fluid additive. Dispersant.

Emergency Telephone (24 hr.):

281-561-1600

Supplied by:

M-I L.L.C.

P.O. Box 42842

Houston, TX 77242

www.miswaco.com

Telephone Number:

281-561-1511

Contact Person:

Catherine Miller, Product Safety Specialist

Revision Number:

3

HMIS Rating

HMIS Key:

4=Severe, 3=Serious, 2=Moderate, 1=Slight, 0=Minimal Hazard. *Chronic effects - See Section 11. See

Section 8 for Personal Protective Equipment recommendations.

2. COMPOSITION/INFORMATION ON INGREDIENTS

Ingredient CAS No. Wt. % Comments:

Lignite 1415-93-6 95 - 99 No comments.

Silica, crystalline, quartz 14808-60-7 1 - 5 No comments.

3. HAZARDS IDENTIFICATION

Emergency Overview:

Caution! May cause eye, skin, and respiratory tract irritation. Long term inhalation of

particulates may cause lung damage. Cancer hazard. Contains crystalline silica

which may cause cancer.

Canadian Classification:

Potential Health Effects:

Acute Effects

Eye Contact:

May cause mechanical irritation

Skin Contact:

May cause mechanical irritation.

Inhalation:

May cause mechanical irritation.

Ingestion:

May cause gastric distress, nausea and vomiting if ingested.

Carcinogenicity & Chronic

Effects:

See Section 11 - Toxicological Information.

Routes of Exposure:

Eyes. Dermal (skin) contact. Inhalation.

Health:

1*

UN PIN No:

Not regulated WHMIS Class: D2A

Flammability:

1

Physical

State:

Powder, dust.

Odor:

Earthy.

Physical Hazard:

0

Color:

Black

PPE:

E

MATERIAL SAFETY DATA SHEET

Trade Name:

TANNATHIN*

MSDS NO.

10288 Revision Date: 09/13/2004 Page 2/6

Target Organs/Medical

Conditions Aggravated by

Overexposure:

Eyes. Skin. Respiratory System.

4. FIRST AID MEASURES

Eye Contact:

Promptly wash eyes with lots of water while lifting eye lids. Continue to rinse for at

least 15 minutes. Get medical attention if any discomfort continues.

Skin Contact:

Wash skin thoroughly with soap and water. Remove contaminated clothing and

launder before reuse. Get medical attention if any discomfort continues.

Inhalation:

Move person to fresh air. If not breathing, give artificial respiration. If breathing is

difficult, give oxygen. Get medical attention.

Ingestion:

Dilute with 2 - 3 glasses of water or milk, if conscious. Never give anything by mouth

to an unconscious person. If signs of irritation or toxicity occur seek medical

attention.

General Notes:

Persons seeking medical attention should carry a copy of this MSDS with them.

5. FIRE FIGHTING MEASURES

Flammable Properties

Flash Point: F (C):

309F (153.9C)

Flash Point Method:

PMCC

Flammable Limits in Air - Lower (%):

NA

Flammable Limits in Air - Upper (%):

NA

Autoignition Temperature: F(C)

NA

Flammability Class:

IIIB

Other Flammable Properties:

Particulate may accumulate static electricity. Dusts at sufficient concentrations can

form explosive mixtures with air.

Extinguishing Media:

This material is not combustible. Use extinguishing media appropriate for

surrounding fire.

Protection Of Fire-Fighters:

Special Fire-Fighting Procedures:

Do not enter fire area without proper personal protective equipment, including

NIOSH/MSHA approved self-contained breathing apparatus. Evacuate area and fight fire from a safe distance. Water

spray may be used to keep fire-exposed containers cool. Keep water run off out of sewers and waterways.

Hazardous Combustion Products:

Oxides of: Carbon.

6. ACCIDENTAL RELEASE MEASURES

Personal Precautions:

Use personal protective equipment identified in Section 8.

Spill Procedures:

Evacuate surrounding area, if necessary. Wet product may create a slipping hazard.

Contain spilled material. Avoid the generation of dust. Sweep, vacuum, or shovel

and place into closable container for disposal.

Environmental Precautions:

Waste must be disposed of in accordance with federal, state and local laws. Do not

allow to enter sewer or surface and subsurface waters.

7. HANDLING AND STORAGE

Handling:

Put on appropriate personal protective equipment. Avoid contact with skin and eyes.

Avoid generating or breathing dust. Product is slippery if wet. Use only in a well

ventilated area. Wash thoroughly after handling.

MATERIAL SAFETY DATA SHEET

Trade Name:

TANNATHIN*

MSDS NO.

10288 Revision Date: 09/13/2004 Page 3/6

Storage:

Store in dry, well-ventilated area. Keep container closed. Store away from

incompatibles. Follow safe warehousing practices regarding palletizing, banding,

shrink-wrapping and/or stacking.

8. EXPOSURE CONTROLS/PERSONAL PROTECTION

Exposure Limits (TLV & PEL - 8H TWA):

Ingredient CAS No. Wt. % ACGIH TLV OSHA PEL Other Notes

Lignite 1415-93-6 95 - 99 NA NA NA (1)

Silica, crystalline, quartz 14808-60-7 1 - 5 0.05 mg/m

3 see Table Z-3 NIOSH: 0.05

mg/m

3 TWA

(10H day/40H

wk)

(R)

Notes

(1) Control as an ACGIH particulate not otherwise specified (PNOS): 10 mg/m

3 (Inhalable); 3 mg/m3 (Respirable) and an

OSHA particulate not otherwise regulated (PNOR): 15 mg/m

3 (Total); 5 mg/m3 (Respirable).

(R) Respirable fraction (ACGIH);

Table Z-3: PEL for Mineral Dusts containing crystalline silica are 10 mg/m

3 / (%SiO2+2) for quartz and 1/2 the calculated

quartz value for cristobalite and tridymite.

Engineering Controls:

Use appropriate engineering controls such as, exhaust ventilation and process enclosure, to

ensure air contamination and keep workers exposure below the applicable limits.

Personal Protection Equipment

Eye/Face Protection:

Dust resistant safety goggles.

Skin Protection:

Wear appropriate clothing to prevent repeated or prolonged skin contact. Chemical

resistant gloves recommended for prolonged or repeated contact. Use protective

gloves made of: Nitrile. Neoprene.

Respiratory Protection:

Use at least a NIOSH-approved N95 half-mask disposable or reuseable particulate

respirator (dusk mask).

In work environments containing oil mist/aerosol, use at least NIOSH-approved P95

half-mask disposable or reuseable particulate respirator.

For exposure exceeding 10 x PEL use a NIOSH-approved N100 Particulate

Respirator.

Refer to Exposure Limits table (Section 8) for component specific respiratory

protection recommendations.

General Hygiene Considerations:

Work clothes should be washed separately at the end of each work day. Disposable

clothing should be discarded, if contaminated with product.

9. PHYSICAL AND CHEMICAL PROPERTIES

Color:

Black

Odor:

Earthy.

Physical State:

Powder, dust.

pH:

4.5 max. (2% solution)

Specific Gravity (H2O = 1):

1.6 - 1.8 at 68 F (20 C)

Solubility (Water):

Slightly.

Flash Point: F (C):

309F (153.9C)

Melting/Freezing Point:

ND

Boiling Point:

ND

Vapor Pressure:

NA

Vapor Density (Air=1):

NA

MATERIAL SAFETY DATA SHEET

Trade Name:

TANNATHIN*

MSDS NO.

10288 Revision Date: 09/13/2004 Page 4/6

Evaporation Rate:

NA

Odor Threshold(s):

ND

10. STABILITY AND REACTIVITY

Chemical Stability:

Stable

Conditions to Avoid:

Keep away from heat, sparks and flame.

Materials to Avoid:

Oxidizers.

Hazardous Decomposition

Products:

For thermal decomposition products, see Section 5.

Hazardous Polymerization:

Will not occur

11. TOXICOLOGICAL INFORMATION

Component Toxicological Data:

Any adverse component toxicological effects are listed below. If no effects are listed,

no such data were found.

Ingredient Component Toxicological Summary

Silica, crystalline,

quartz

Crystalline silica is the most widely occurring of all minerals. The most common form of silica is

sand. The International Agency for Research on Cancer (IARC) has designated crystalline silica

in the form of quartz or cristobalite a Group 1 (carcinogenic to humans). This designation was

based on an increased risk of lung cancer among crystalline silica exposed workers. IARC did

note that carcinogenicity of crystalline silica in humans was not detected in all industrial

circumstances studied. Further, carcinogenicity of crystalline silica may be dependent on

inherent characteristics of the crystalline silica or external factors affecting its biological activity or

distribution of polymorphs. (IARC Vol. 68, 1997, p. 41).

The National Toxicology Program (NTP) classifies crystalline silica as "reasonably anticipated to

cause cancer in humans" (6th Annual Report on Carcinogens, 1991). Long term inhalation of

crystalline silica can also result in the lung disease, silicosis. Symptoms of this disease include

coughing and shortness of breath. (NJ HSFS, January 1996)

Product Toxicological Information:

Long term inhalation of particulate can cause irritation, inflammation and/or permanent injury to the lungs. Illnesses such

as pneumoconiosis ("dusty lung"), pulmonary fibrosis, chronic bronchitis, emphysema and bronchial asthma may develop.

12. ECOLOGICAL INFORMATION

Product Ecotoxicity Data:

Contact M-I Environmental Affairs Department for available product ecotoxicity data.

Biodegration:

ND

Bioaccumulation:

ND

Octanol/Water Partition

Coefficient:

ND

13. DISPOSAL CONSIDERATIONS

Waste Classification:

ND

Waste Management:

Under U.S. Environmental Protection Agency (EPA) Resource Conservation and

Recovery Act ( RCRA), it is the responsibility of the user to determine at the time of

disposal, whether the product meets RCRA criteria for the hazardous waste. This is

because product uses, transformations, mixtures, processes, etc., may render the

resulting materials hazardous. Empty containers retain residues. All labeled

precautions must be observed.

MATERIAL SAFETY DATA SHEET

Trade Name:

TANNATHIN*

MSDS NO.

10288 Revision Date: 09/13/2004 Page 5/6

Disposal Method:

Recover and reclaim or recycle, if practical. Should this product become a waste,

dispose of in a permitted industrial landfill. Ensure that the containers are empty by

the RCRA criteria prior to disposal in a permitted industrial landfill.

14. TRANSPORT INFORMATION

U.S. DOT Shipping Description:

Not regulated for transportation by DOT, TDG, IMDG,

ICAO/IATA.

Canada TDG Shipping Description:

Not regulated.

UN PIN No:

Not regulated

IMDG Shipping Description:

Not regulated.

ICAO/IATA Shipping Description:

Not regulated.

15. REGULATORY INFORMATION

U.S. Federal and State Regulations

SARA 311/312 Hazard Catagories:

Delayed (chronic) health hazard.

SARA 302/304, 313; CERCLA RQ,

California Proposition 65:

Note: If no components are listed below, this product is not subject to the referenced

SARA and CERCLA regulations and is not known to contain a Proposition 65 listed

chemical at a level that is expected to pose a significant risk under anticipated use

conditions.

Ingredient SARA 302

/ TPQs

SARA 313 CERCLA

RQ

CA 65

Cancer

CA 65

Dev. Tox.

CA 65

Repro. F

CA 65

Repro. M

Silica, crystalline, quartz --- --- --- X --- --- ---

International Chemical Inventories

Australia AICS - Components are listed or exempt from listing.

Canada DSL - Components are listed or exempt from listing.

China Inventory - Components are listed or exempt from listing.

European Union EINECS - Components are listed or exempt from listing.

Japan METI ENCS - Components are listed or exempt from listing.

Korea TCCL ECL - Components are listed or exempt from listing.

Philippine PICCS - Components are listed or exempt from listing.

U.S. TSCA - Components are listed or exempt from listing.

U.S. TSCA - No components are subject to TSCA 12(b) export notification requirements.

Canadian Classification:

Controlled Products Regulations Statement: This product has been classified in accordance with the hazard criteria of the

CPR and the MSDS contains all the information required by the CPR.

WHMIS Class:

D2A

16. OTHER INFORMATION

The following sections have been revised:

All sections.

NA - Not Applicable, ND - Not Determined.

*A mark of M-I L.L.C.