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Borax Europe Limited170 Priestley RoadGuildford GU2 5RQUnited Kingdom

To:fax:

Bert WoltingHalliburton-ERC0031715813400Date: 13 April 1999Ref:Page 1 of 6

From: Keith Shettle If you are not the intendedtelephone: 01483 242072fax: 01483242083email:

rekpient of this fax, pleasenotify the sender and respectthe messages confidentiality.Thank you.

Potassium PentaborateReference your emaif to Jonathan Rainer.Please find attached a copy of our latest version of our MSD$ and specification for Potass iumPentaborate.If you require any fiu?her information please let me know.

Regards

Keith Shettle

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Safety Data SheetDATE OF ISSUE March 1997PotassiumPentaborate

Product name: Potassium PcntabomtcGrades: TechnicalPraduct use: Industzial manufacturingChemical formula:Chemical name/synonyms: %fi ,0%-8Y*Dipormahun decabaratc -OCtah@itI?Chemical family: Inorganic BoracesCA 5 registry number: 12229-13-9

(Refer to section 15 - Chemical inventory listing)

ISSllED BY: Borax Europe Limited170 FricsUcy RoadGuildford. GU2 SRQUnited Kingdom

EMERGENCY PHONE NUMBER+44 @)I483 734000This product contains greater than 99.5 pcrccnt (96) pota55iumpentaborate I&B&J,-8H,O. Potassium pcnt&uate is not

classified as dangerous under the EC &ctivc 671548tEECand subsequent amcndmcnts.

Emergency ouervlewPot&urn pentaborate is a white odourlcss. powdcrcdsubstance that is nof flammable, combustible. or explosive. Ithas low acute oral and dcrmal toricity.Potential ecoldgical effectsLarge amount5 of ammmoniu m pcntabomtatt ~80 be harmful foplant5 and other species. Therefore, releases to theenvironment should be minim&d.P tential health effectsInhalation is the most significant route of cxposurc inoccupalional and other SCtting9. Dermal exposure is not usuallya conmn because potassium pent&orate is poorly absorbedthrough in&ct skin.Inhalation: Occasional mild irritation cffccts to nose andthroat may occur from inhalation OTpotassium pent.aboratcdusts at levels greater than 10 mglm.Eye contact: Potassium pcntaboratc is non-irrilating to cycsin IIOIIMI industrial use.

Skin contact: Patassium pcntaboratc is not likely to causeirritation to intact skin.Ingestion: Products cnntaining potassium pcntaboratc arc noIin~cndcd for ingestion. Potassium pen&borate ha5 low acutetoxicity. Small amounts (c.g. a teaspoonful) swal lowedaccidentally are not likely to cause cffccts; swallowirtgarnounls larger than that may we gastrointestinal symptoms.Cancer: Pota55ium pentaborate is not a known carcinogen.Reproductive/Developmental: Animal ingestion studits iztseveral species, at high doses, indicate that berates causereproductive and dcvclopmcnlal effects. A human study ofOccuptional exposure to borate dust showed no advcrsc cffcclon rcpraducti0n.Slgnr and symptoms of eqosure: Symptoms ofaccidental over-exposure to boratcs have been associated withingestion or absorption through Iargc arws of darnagcd skin.These may include nausea. vomiting, and diarfhoes, withdclaycd cffccts of skin rcdncss and peeling (see sccrioll 11).

Inhalation: IT symptoms such aa nosy or throat irritation arcobsm@ mn~vc LO resh air.Eye COntaCt: Use eye wash fountain or fresh water 10 clcensceye. lr irriution persists for more than 30 minutes. seekmedical attention.Skin contact: No ttcatmcnl necess ary bccaugc ncz-irritating.Ingestion: Swallowing small qua&ties (one teaspoon) willcause no harm 10 hcahhy adulls. IT larger amount s 1v~:swnllowcd, give two glesscs of water to drink and seekmcdicsl attention.

Note to physiciansObservation only is required for adult ingestion of less than 5grams of potassium pent&orate. For ingestian in cxccss of 5grams, maintain adequate kidney function and force fluids.Gastric Wage is recommcndcd for symptomatic paticrtls only.Hacmodialysis should bc reserved for massive acute ingestionor patients with renal failure. Bomn analysts of urine or bloodare only useful for documenting exposure and shnuld not beused to cvaluarc sevcrily of poisoning or to guide tieahncnt(9x .WCtiod 1 ).

BOR-A/X*t3PPPl

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Potassium Pentaborate

tenefal hazard: None. because potassium pentaborate is it Extinguishing media: Any fire extinguishing media may bcfhtmmablc. combuatiblc or cxplosivc. The product is i&elf u used on nctiy fires.flame retardam

Getteral; Potassium pcntaboratc is a water-soluble whitepowder that may cause damage to lrces or vegetation by rootabsorption (see section 12).Land spill: Vacuum, shove1 or sweep up potassiumpentaborate and place in containers for disposal in accordancewith applicable haI rtguIdoa6. Avoid contamination ofwater bodies during clean up and disposal. No pcraondprdtivc quipmcnt is needed to clean up land spills.

Spillage into water; Where pouuiblc. rcmovc any inmcLcontainers from the water. Advise local water authority thatnone of the affcctcd water should bc used for inigarion or forthe abstraction of potable water unlil oatural dilution return6the boron value to its normal environmental backgmund level(XC sections 12, 13 and 15).

General: No special handling precautions are required. butdry, indoor storage is rccommcndcd. To maintain package Storage temperature: Ambientintegrity and to rninirnis~ caking of tbc produeL b&s should bc Storage pressure: Atmospherichandled on a first-in first-out basis. Good housckecpingpr~ced~~s should be followed to minimize dust generation and Special sensitivity: Moisture (Caking)accumulation.

Engineering controls: Use 1ocaI exhaust ventilation to keep exposurea. but may be warmnted iT ew-imttmenl is extremelyairborne concentrations of potassium pontabaratc dust below dusty. ,pctiaaible exposure levelc. Occupational exposure limit% Potassium pentaborate isPersonal protection: Where airborne conoentmlions are listed by ACGW as Particulate Not Otierwisc Classified afcxpcctcd to cxcccd cxposurc limit& rcspifatbf) should be used. Nuisance Dust. The ACGIH: TLV fzhrrshold Limit Value) isEye goggles and gloves are not required for normal industrial 10 nl&P.

Appearance: White, crystalline.cdourless solid. pli @ 2bOC: 8.4 (0.3% solution)Solubility in water: 3.8% @ 20C 7.6 (5.9% solution)29.6% @ 100C Molecular weight: 293.0 (KBsO,-41-i&J]Specific gravity; 1.58

General: Potassium pentaboratc is a stable product. alkali metals will generate hydrogen gas which could create anIncompatible materials and conditions to avoid: explosive bawd,Reaction with strong reducing agents such as metal hydrides or Hazardous decomposition: None

Acute toxicityIngestion: LOW acute oral toxicity; LD,O in rats is 2.800 mg/kg ol body weight bavcd on potassium teuahoratc teuahydntcSkin: No cxperimenLa1 test data.damInhalation: NO experimental fez1 dalu. Other boratcs indicatelow aculc inhalation Ioxicity. Many years of occupatinnalcxpostire to hotic acid and other honatcs indicstc no increase inpulmonary disease.

Skin irritation; No experimental test data. tlowevcr. the

Eye irritation: No cxpcrimcntal test data Fifty years ofotiupational exposure to sodium pcntaboratc indicate no

chemically related potasstum tctraboratc tctrahydratc is not a

adverse effect on the human cyc.

skin irritant.

Sensitisation: No expenmcnd tcbl dam; howcvcr orhcrbor;lms arc not skin scnsitiscrs.2

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other Reproducti WDevrstopmental taxlcity: No experimentaltest data. Howtv~, animal feeding studies with boric acid andsodium tetmboratc in mb mous e and dog, at high doses. havedcmonstratcd effects on fertility and testes. Studies with thechemically related boric acid in rat, mouse and rabbit, at highdoses, dcmodetrate development effects on the foetus includingfoetal weight loss and minor skeletal variations. The dosesadministered wcrc many ti mes in excess of those which humanswould normally be exposed 1034,.

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Carcinogenicity/Mutagenicity~ No cxpezimental test data.However, no evidence of catcinogenicity or mtagcnitity wasobserved in mice for boric acid or sodium tetraborate.Human data: Human cpidemiological sludic6 show noincrease in pulmonary disease in occupational populations withchrcmic exposures U) boric acid dubt and sodium borate dust Arecent epidemiology study under tht conditions of nofmBloccupational exposure to borate dusts indicated no cffecl onfertility.

Ecotoxicity dataGeneral: Boron occurs rtasurally in sea water at an averageconcentration of 5 rng B/l and fresh water at 1 mg B/l or IcsS.In dilute aqueous solutions the predominant boron speciespresrmt ia ut~dissociati boric acid. To convert potassiumpentaboratc i nto equivalcnr bor on (I3) content. multiply by0.1843.Phytotoxicity: Boron is an csscntial micronutrient for hcahhygrowth of plants. however, it can be -1 to boron sensitiveplants in higbcr quantities. Cart should be taken to minimiscthe amount af borat e product t-cleased co the cnvifonmcnt.Algal toxicity?Green a&c, Scenedas mus subspicutlrrEC,,, - 24 mg B/1$Invertebrate togidty:Daphnids, Daphia magna Straus

48-hr LC,, = 133 mg B/I+al-day NOEC-L OEC = 6-13mg Wl

Test subrtancc; + Boric acid* Sodium tctmborate

fish toxicity:Sea water?Dab, Limanda thanah96-hr LC,, = 40 mg B/l*Fresh watf+Rainbow MU, Sob gairdneti (embryo-larval stage)24.day LC,, = 150mgBIl

32-day LC,, = 100 mg B/l1Goldfish, Caras&* alrratra (embryo-lmal stage)

7-day IL,, = 46 mg BITWay LC,, = 178 mg WIEnvironmental fate dataPersistence/Degradation: Borou is naturally occurring andubiquitous in the environment. Potassium pcntaboratedecomposes in the environment to natural borakOctanaUUVatet partition coefficient: No value. Inaquc~us solution potassium pentabotate is convertedsubstantially into undissociated boric acid.5011 mobility: The product is soluble in water and isleachable through normal soil.

133 ) . . . .- _ .Dlrposal guidance; Small quantities of potassium Tonnage quantities of producr are not recornrnend~ to bc smtpcmaborate can usually be disposed of at landfill sites. NO to landfills. Such product should, if possible. be used for WIspecial disposal ta%atment s required. but local authorities appropiiate application.should be consulted about any specific lo~sl requirements.International transportation: Pow&urn pentaborarc hasno UN Number, and is not rcgularcd under international fail.road. water or air transport mgulations.

Chemical inventory listing: (12046-04-7) Potassium General: Ensure all ~arionalflocal regulations are obscrvcd.pcntabonle appears on scvcral chemical inventory lists(including the EPA TWA inventory, Can adian DSL. Europrx~ Clean Air Act (Montreal Protocol): Potassium pcntaborateEINECS. Australian) under the CAS No. rcprcscnting the was not manufaacumx with and dots not contain my Class I oranhydrous form of this inorganic salt. Class II OLOIIC cplcting substanccu.U.S. EPA TWA Inventory 11128-29-3Canadian DSL I 128-29-3ElNECS 234-321-7

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Referencfzs1.

2.3.

4.5.6.7.8.9.

LitwiLe T L. Norman S A. Veltri J C. AnnualReport of 6-c Amcricuu Association of ParsonContfol Centers Data Collection System. Am. J.Emerg. Med. (1986). 4.427458Weir R -1,Fisbcr R S. Toxicol. Appl. Pharmacol..(1972). 23.351-364National Toxicology Program (NTP) -Technical Rc~ort Series No. TR324,NIH Publication No. 88-2580 (1987) PB88 2134751XABPail et al. hnd. Appl. Toxicol. (1991) 17.225-239Hcindel el aL. Fund. Appl. Toxicol. (1992) 18.266277GuhI W, SoI+J-Jownai (1992) 181 (18192). 1159-1168Sch6kl f, MarI and Huber L (1988) Tcnsidc SutfactantsDetergents 25,99- 107Hugman S J and Mauce G (1983) Water Rcscmch CentreReport 616-MBirgc W J, Black J A. EPA-56W-76-008 (April1977) PB 267 085

Far general iofotmarion on the toxicology of horates setECETOC Tc~lmical Report No. 63 (1995); Pattys IndustrialHygiene and Toxicology, 4th Edition Vol. II. ( 1994) Chap. 42,BClrIXl.

Manufactud byBorax Ffangeis SAA.IJsioclSitge SocialRoute de RourbourgBoitc Postale 5959411 Coudekcrquc-BrancheC&x. France

For further information contact:l31vizuumcntal DcpartmenrBorax Europe limited170 Prlcstlcy RoadGuMford, GU2 SRQUnited Kingdomtelephone; 01483 734000facsimile: 01483 457676telex: 929453 BORAXL G

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PotassiumPentaborateTechnical GranularPotassium Pentaborate TetrahydrateK$,,,O,,-SH,O [or KB,0,-4H20~CAS No. 12229-l 3-9

Potassium Pentaborate Technical Granular is a free-flowing, off-white crystalline product manufactured in France by BoraxFranqais S.A.Chemical specif icatian

Typical GuaranteeB-0, % 59.5 59.0-60.1E$valent K,B100,,*8H,0 100.2 99.5-101.2&O% 15.9 15.3-16.6so, PPm