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MATERIAL SAFETY DATA SHEET

Drill-Thin Thinner

Version 1.4 Revision Date 2013-09-05

MSDS Number:100000014172 1/11

SECTION 1: Identification of the substance/mixture and of the company/undertaking

Product information

Trade name : Drill-Thin ThinnerMaterial : 1016816

Use : Drilling Mud Additive

Company : Drilling Specialties Company10001 Six Pines DriveThe Woodlands, TX 77380

Emergency telephone:

Health:866.442.9628 (North America)

1.832.813.4984 (International)Transport:North America: CHEMTREC 800.424.9300 or 703.527.3887Asia: +800 CHEMCALL (+800 2436 2255)EUROPE: BIG +32.14.584545 (phone) or +32.14583516 (telefax)South America SOS-Cotec Inside Brazil: 0800.111.767 Outside Brazil: +55.19.3467.1600

Responsible Department : Product Safety and Toxicology GroupE-mail address : [email protected] : www.CPChem.com

SECTION 2: Hazards identification

Emergency Overview

Physical state: Solid Color:Brown Odor:Odorless

OSHA Hazards : Carcinogen

GHS Classification

: Carcinogenicity, Category 1AAcute aquatic toxicity, Category 3Chronic aquatic toxicity, Category 3

GHS-Labeling

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Symbol(s) :

Signal Word : Danger

Hazard Statements : H303: May be harmful if swallowed.H350: May cause cancer.H412: Harmful to aquatic life with long lasting effects.

Precautionary Statements : Prevention:P202: Do not handle until all safety precautions have beenread and understood.P273: Avoid release to the environment.P280: Wear protective gloves/ eye protection/ face protection.Response:P305 + P351 + P338: IF IN EYES: Rinse cautiously withwater for several minutes. Remove contact lenses, if presentand easy to do. Continue rinsing.P308 + P313: IF exposed or concerned: Get medical advice/attention.Storage:P405: Store locked up.Disposal:

P501: Dispose of contents/ container to an approved wastedisposal plant.

Carcinogenicity:

IARC Group 1: Carcinogenic to humans

Crystalline Silica 14808-60-7

NTP No ingredient of this product present at levels greater than orequal to 0.1% is identified as a known or anticipated carcinogenby NTP.

ACGIH Suspected human carcinogen

Crystalline Silica 14808-60-7

SECTION 3: Composition/information on ingredients

Synonyms : Drilling Mud Additive

Molecular formula : Mixture

Component CAS-No. Weight %Methyl ester of sulfonated tannin 79770-92-6 80Ferrous Sulfate 17375-41-6 9Stannous Sulfate 7488-55-3Crystalline Silica 14808-60-7 1

SECTION 4: First aid measures

General advice : Move out of dangerous area. Show this material safety data

10

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sheet to the doctor in attendance. Do not leave the victimunattended.

If inhaled : Move to fresh air. If symptoms persist, call a physician.If unconscious place in recovery position and seek medical

advice. If symptoms persist, call a physician.

In case of eye contact : Immediately flush eye(s) with plenty of water. Remove contactlenses. Protect unharmed eye. Keep eye wide open whilerinsing. If eye irritation persists, consult a specialist.

If swallowed : Gently wipe or rinse the inside of the mouth with water.Induce vomiting immediately and call a physician. Keeprespiratory tract clear. Never give anything by mouth to anunconscious person. If symptoms persist, call a physician.Take victim immediately to hospital.

SECTION 5: Firefighting measures

Flash point : Not applicable

Autoignition temperature : No data available

Unsuitable extinguishingmedia

: High volume water jet.

Specific hazards during fire

fighting

: Do not allow run-off from fire fighting to enter drains or water

courses.

Special protectiveequipment for fire-fighters

: Wear self contained breathing apparatus for fire fighting ifnecessary.

Further information : Collect contaminated fire extinguishing water separately. Thismust not be discharged into drains. Fire residues andcontaminated fire extinguishing water must be disposed of inaccordance with local regulations.

Fire and explosionprotection

: Avoid dust formation. Provide appropriate exhaust ventilationat places where dust is formed.

Hazardous decompositionproducts : Carbon oxides. Sulfur oxides.

SECTION 6: Accidental release measures

Personal precautions : Use personal protective equipment. Avoid dust formation.Avoid breathing dust.

Environmental precautions : Prevent product from entering drains. Prevent further leakageor spillage if safe to do so. If the product contaminates riversand lakes or drains inform respective authorities.

Methods for cleaning up : Keep in suitable, closed containers for disposal.

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SECTION 7: Handling and storage

Handling

Advice on safe handling : Avoid formation of respirable particles. Do not breathevapors/dust. Avoid exposure - obtain special instructionsbefore use. Avoid contact with skin and eyes. For personalprotection see section 8. Smoking, eating and drinking shouldbe prohibited in the application area. Dispose of rinse water inaccordance with local and national regulations.

Advice on protectionagainst fire and explosion

: Avoid dust formation. Provide appropriate exhaust ventilationat places where dust is formed.

Storage

Requirements for storageareas and containers : Keep container tightly closed in a dry and well-ventilated place.Containers which are opened must be carefully resealed andkept upright to prevent leakage. Observe label precautions.Electrical installations / working materials must comply with thetechnological safety standards.

SECTION 8: Exposure controls/personal protection

Ingredients with workplace control parameters

US

Ingredients Basis Value Control parameters Note

Crystalline Silica ACGIH TWA 0.025 mg/m3 A2, Respirable fractionOSHA Z3 TWA 30mg/m3/%SiO2+2 total dust

OSHA Z3 TWA 250mppcf/%SiO2+5 a, b, respirable

OSHA Z3 TWA 10mg/m3/%SiO2+2 e, respirable

OSHA Z-1-A TWA 0.1 mg/m3 Respirable fraction

OSHA Z3 TWA 0.1 mg/m3 Respirable fraction

a Millions of particles per cubic foot of air, based on impinger samples counted by light-field techniques.A2 Suspected human carcinogen

b The percentage of crystalline silica in the formula is the amount determined from airborne samples, except in those instances inwhich other methods have been shown to be applicable.

e Both concentration and percent quartz for the application of this limit are to be determined from the fraction passing a size-selectorwith the following characteristics: Aerodynamic diameter (unit density sphere): 2; Percent passing selector: 90 Aerodynamicdiameter (unit density sphere): 2,5; Percent passing selector: 75 Aerodynamic diameter (unit density sphere): 3,5; Percent passingselector: 50 Aerodynamic diameter (unit density sphere): 5,0; Percent passing selector: 25 Aerodynamic diameter (unit densitysphere): 10; Percent passing selector: 0 The measurements under this note refer to the use of an AEC (now NRC) instrument.The respirable fraction of coal dust is determined with an MRE; the figure corresponding to that of 2.4 mg/m3 in the table for coaldust is 4.5 mg/m3.

Immediately Dangerous to Life or Health Concentrations (IDLH)

Substance name CAS-No. Control parameters Update

Stannous Sulfate 7488-55-3 Immediately Dangerous to Life or HealthConcentration Value100 milligram per cubic meter

1995-03-01

Crystalline Silica 14808-60-7 Immediately Dangerous to Life or HealthConcentration Value50 milligram per cubic meter

1995-03-01

Engineering measures

Adequate ventilation to control airborned concentrations below the exposure guidelines/limits.

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Consider the potential hazards of this material (see Section 2), applicable exposure limits, jobactivities, and other substances in the work place when designing engineering controls and selectingpersonal protective equipment. If engineering controls or work practices are not adequate to preventexposure to harmful levels of this material, the personal protective equipment listed below isrecommended. The user should read and understand all instructions and limitations supplied with

the equipment since protection is usually provided for a limited time or under certain circumstances.

Personal protective equipment

Respiratory protection : Wear a supplied-air NIOSH approved respirator unlessventilation or other engineering controls are adequate tomaintain minimal oxygen content of 19.5% by volume undernormal atmospheric pressure. Wear a NIOSH approvedrespirator that provides protection when working with thismaterial if exposure to harmful levels of airborne material mayoccur, such as:. Air-Purifying Respirator for Dusts and Mists /P100. Use a positive pressure, air-supplying respirator if there

is potential for uncontrolled release, exposure levels are notknown, or other circumstances where air-purifying respiratorsmay not provide adequate protection.

Hand protection : The suitability for a specific workplace should be discussedwith the producers of the protective gloves. Please observethe instructions regarding permeability and breakthrough timewhich are provided by the supplier of the gloves. Also take intoconsideration the specific local conditions under which theproduct is used, such as the danger of cuts, abrasion, and thecontact time. Gloves should be discarded and replaced if thereis any indication of degradation or chemical breakthrough.

Eye protection : Eye wash bottle with pure water. Tightly fitting safety goggles.

Skin and body protection : Choose body protection in relation to its type, to theconcentration and amount of dangerous substances, and to thespecific work-place. Wear as appropriate:. Protective suit.Footwear protecting against chemicals.

Hygiene measures : When using do not eat or drink. When using do not smoke.Wash hands before breaks and at the end of workday.

SECTION 9: Physical and chemical properties

Information on basic physical and chemical properties

Appearance

Physical state : SolidColor : BrownOdor : Odorless

Safety data

Flash point : Not applicable

Lower explosion limit : Not applicable

Upper explosion limit : Not applicable

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Oxidizing properties : no

Autoignition temperature : No data available

Molecular formula : Mixture

Molecular Weight : No data available

pH : No data available

Freezing point : No data available

Pour point No data available

Boiling point/boiling range : Not applicable

Vapor pressure : Not applicable

Relative density : 1.5, 15.6 C(60.1 F)

Water solubility : Completely Soluble

Partition coefficient: n-octanol/water

: No data available

Viscosity, kinematic : Not applicable

Relative vapor density : Not applicable

Evaporation rate : Not applicable

SECTION 10: Stability and reactivity

Chemical stability : This material is considered stable under normal ambient andanticipated storage and handling conditions of temperatureand pressure.

Possibility of hazardous reactions

Conditions to avoid : No data available.

Materials to avoid : Avoid contact with strong oxidizing agents.

Other data : No decomposition if stored and applied as directed.

SECTION 11: Toxicological information

Drill-Thin ThinnerAcute oral toxicity : Acute toxicity estimate: 3,280.98 mg/kg

Method: Calculation method

Acute inhalation toxicity

Methyl ester of sulfonatedtannin

: LC50: > 6.66 mg/lExposure time: 4 h

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Species: ratSex: male and femaleTest atmosphere: dust/mistInformation given is based on data obtained from similarsubstances.

Stannous Sulfate LC50: not known

Acute dermal toxicity


:Species: rabbit

Stannous Sulfate LD50: not known

Drill-Thin ThinnerSkin irritation : May cause skin irritation in susceptible persons.

Drill-Thin ThinnerEye irritation : Eye irritation

Drill-Thin ThinnerAspiration toxicity : No aspiration toxicity classification.

Drill-Thin ThinnerFurther information : No data available.

SECTION 12: Ecological information

Toxicity to fish


: LC50: > 1,800 mg/lExposure time: 96 hSpecies: Scophthalmus maximus (Flatfish, Flounder)

Ferrous Sulfate LL50: > 6.25 mg/lExposure time: 96 hSpecies: Cyprinodon variegatus (sheepshead minnow)Method: OECD Test Guideline 203

Toxicity to daphnia and other aquatic invertebrates


: EC50: 73.2 mg/lExposure time: 48 hSpecies: Acartia tonsa (Marine Copepod)

Ferrous Sulfate LC50: 190 mg/lExposure time: 48 hSpecies: Acartia tonsa (Marine Copepod)

Toxicity to algae


: EL50: 79 mg/lExposure time: 72 hSpecies: Desmodesmus subspicatus (green algae)

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Ferrous Sulfate EL50: 45 mg/lExposure time: 72 hSpecies: Skeletonema costatum (Marine Algae)

Elimination information (persistence and degradability)

Biodegradabili ty : Not applicable

Additional ecologicalinformation

: An environmental hazard cannot be excluded in the event ofunprofessional handling or disposal.Harmful to aquatic life with long lasting effects.

SECTION 13: Disposal considerations

The information in this MSDS pertains only to the product as shipped.Use material for its intended purpose or recycle if possible. This material, if it must be discarded,may meet the criteria of a hazardous waste as defined by US EPA under RCRA (40 CFR 261) orother State and local regulations. Measurement of certain physical properties and analysis forregulated components may be necessary to make a correct determination. If this material isclassified as a hazardous waste, federal law requires disposal at a licensed hazardous wastedisposal facility.

Product : The product should not be allowed to enter drains, watercourses or the soil. Do not contaminate ponds, waterways orditches with chemical or used container. Send to a licensedwaste management company.

Contaminated packaging : Empty remaining contents. Dispose of as unused product.Do not re-use empty containers.

SECTION 14: Transport information

The shipping descriptions shown here are for bulk shipments only, and may not apply toshipments in non-bulk packages (see regulatory definition).

Consult the appropriate domestic or international mode-specific and quantity-specific DangerousGoods Regulations for additional shipping description requirements (e.g., technical name or names,etc.) Therefore, the information shown here, may not always agree with the bill of lading shippingdescription for the material. Flashpoints for the material may vary slightly between the MSDS and

the bill of lading.

US DOT (UNITED STATES DEPARTMENT OF TRANSPORTATION)

NOT REGULATED AS A HAZARDOUS MATERIAL OR DANGEROUS GOODS FORTRANSPORTATION BY THIS AGENCY.

IMO / IMDG (INTERNATIONAL MARITIME DANGEROUS GOODS)NOT REGULATED AS A HAZARDOUS MATERIAL OR DANGEROUS GOODS FORTRANSPORTATION BY THIS AGENCY.

IATA (INTERNATIONAL AIR TRANSPORT ASSOCIATION)NOT REGULATED AS A HAZARDOUS MATERIAL OR DANGEROUS GOODS FORTRANSPORTATION BY THIS AGENCY.

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ADR (AGREEMENT ON DANGEROUS GOODS BY ROAD (EUROPE))NOT REGULATED AS A HAZARDOUS MATERIAL OR DANGEROUS GOODS FORTRANSPORTATION BY THIS AGENCY.

RID (REGULATIONS CONCERNING THE INTERNATIONAL TRANSPORT OFDANGEROUS GOODS (EUROPE))


ADN (EUROPEAN AGREEMENT CONCERNING THE INTERNATIONAL CARRIAGEOF DANGEROUS GOODS BY INLAND WATERWAYS)


Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code

SECTION 15: Regulatory information

National legislation

SARA 311/312 Hazards : Acute Health HazardChronic Health Hazard

SARA 302 ThresholdPlanning Quantity

: SARA 302: No chemicals in this material are subject to thereporting requirements of SARA Title III, Section 302.

SARA 313 Ingredients : SARA 313: This material does not contain any chemicalcomponents with known CAS numbers that exceed thethreshold (De Minimis) reporting levels established by SARA

Title III, Section 313.

Clean Air Act

Ozone-DepletionPotential

: This product neither contains, nor was manufactured with a Class I orClass II ODS as defined by the U.S. Clean Air Act Section 602 (40 CFR82, Subpt. A, App.A + B).

This product does not contain any hazardous air pollutants (HAP), as defined by the U.S. Clean AirAct Section 12 (40 CFR 61).

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Government Industrial Hygienists

AICS Australia, Inventory of ChemicalSubstances

LOAEL Lowest Observed Adverse EffectLevel

DSL Canada, Domestic SubstancesList

NFPA National Fire Protection Agency

NDSL Canada, Non-DomesticSubstances List

NIOSH National Institute for OccupationalSafety & Health

CNS Central Nervous System NTP National Toxicology Program

CAS Chemical Abstract Service NZloC New Zealand Inventory ofChemicals

EC50 Effective Concentration NOAEL No Observable Adverse EffectLevel

EC50 Effective Concentration 50% NOEC No Observed Effect ConcentrationEGEST EOSCA Generic Exposure

Scenario ToolOSHA Occupational Safety & Health

Administration

EOSCA European Oilfield SpecialtyChemicals Association

PEL Permissible Exposure Limit

EINECS European Inventory of ExistingChemical Substances

PICCS Philippines Inventory ofCommercial Chemical Substances

MAK Germany Maximum ConcentrationValues

PRNT Presumed Not Toxic

GHS Globally Harmonized System RCRA Resource Conservation RecoveryAct

>= Greater Than or Equal To STEL Short-term Exposure Limit

IC50 Inhibition Concentration 50% SARA Superfund Amendments andReauthorization Act.

IARC International Agency for Researchon Cancer

TLV Threshold Limit Value

IECSC Inventory of Existing ChemicalSubstances in China

TWA Time Weighted Average

ENCS Japan, Inventory of Existing andNew Chemical Substances

TSCA Toxic Substance Control Act

KECI Korea, Existing Chemical

Inventory

UVCB Unknown or Variable Composition,

Complex Reaction Products, andBiological Materials

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