Buffer Solution pH 10.01 ± 0.02 (NIST)

SECTION 2: Hazards identification

Causes moderate eye irritation Demineralized Water CAS No.: 7732-18-5 TSCA CAS Number: 7732-18-5 Percent Range: > 99.0 Percent Range Units: volume / volume LD50: None reported LC50: None reported TLV: Not established PEL: Not established No effects anticipated Other components, each CAS No.: Not applicable TSCA CAS Number: Not applicable Percent Range: < 1.0 Percent Range Units: volume / volume LD50: Not applicable LC50: Not applicable TLV: Not established PEL: Not established Any ingredient(s) of this product listed as "Other component(s)" is not considered a health hazard to the user of this product. Sodium Bicarbonate CAS No.: 144-55-8 TSCA CAS Number: 144-55-8 Percent Range: < 0.1 Percent Range Units: weight / weight LD50: Oral rat LD50 = 4220 mg/kg LC50: None reported TLV: Not established PEL: Not established May cause irritation _____________________________________________________________________________ Emergency Overview: Appearance: Clear, blue Odor: None HMIS: Health: 1 Flammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 0 Flammability: 0 Reactivity: 0

Hazard pictograms

Not applicable Not applicable

Potential health effects

Eye Contact: May cause irritiation Skin Contact: May cause irritiation Skin Absorption: No effects anticipated Target Organs: Not applicable Ingestion: None reported Target Organs: None reported Inhalation: No effects anticipated Target Organs: Not applicable

Medical Conditions Generally Aggravated by Exposure

None reported

Potential chronic health

None reported Cancer / Reproductive Toxicity Information: This product does NOT contain any

Storage

Protect from heat Keep container tightly closed when not in use Flammability Class: Not applicable _____________________________________________________________________________ 8. EXPOSURE CONTROLS / PROTECTIVE EQUIPMENT Engineering Controls: Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: disposable latex gloves lab coat Inhalation Protection: adequate ventilation

Precautionary statements

Avoid contact with eyes Wash thoroughly after handling TLV: Not established PEL: Not established _____________________________________________________________________________ 9. PHYSICAL / CHEMICAL PROPERTIES Appearance: Clear, blue Physical State: Liquid Molecular Weight: Not applicable Odor: None pH: 10.0 Vapor Pressure: Not determined Vapor Density (air = 1): Not determined Boiling Point: ~100°C (~212°F) Melting Point: ~0°C (~32°F) Specific Gravity/ Relative Density (water = 1; air =1): 0.990 Evaporation Rate (water = 1): 0.76 Volatile Organic Compounds Content: Not applicable Partition Coefficient (n-octanol / water): Not determined Solubility: Water: Soluble Acid: Soluble Other: Not determined Metal Corrosivity: Steel: Not determined Aluminum: Not determined 10. STABILITY / REACTIVITY Chemical Stability: Stable when stored under proper conditions. Conditions to Avoid: Heat Evaporation Reactivity / Incompatibility: None reported Hazardous Decomposition: None reported Hazardous Polymerization: Will not occur. _____________________________________________________________________________ Not applicable HMIS: Health: 0 Flammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 0 Flammability: 0 Reactivity: 0

TOXICOLOGICAL INFORMATION

Product Toxicological Data: LD50: None reported LC50: None reported Dermal Toxicity Data: None reported Skin and Eye Irritation Data: None reported Mutation Data: None reported Reproductive Effects Data: None reported Ingredient Toxicological Data: None reported _____________________________________________________________________________

ECOLOGICAL INFORMATION

Product Ecological Information: No information available for this product. Ingredient Ecological Information: None reported _____________________________________________________________________________ 13. DISPOSAL CONSIDERATIONS EPA Waste ID Number: None Special Instructions (Disposal): Adjust to a pH between 6 and 9 with an acid, such as sulfuric or citric. Open cold water tap completely, slowly pour the reacted material to the drain. Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. _____________________________________________________________________________ 14. TRANSPORT INFORMATION D.O.T.: D.O.T. Proper Shipping Name: Not Currently Regulated -- DOT Hazard Class: NA DOT Subsidiary Risk: NA DOT ID Number: NA DOT Packing Group: NA I.C.A.O.: I.C.A.O. Proper Shipping Name: Not Currently Regulated -- ICAO Hazard Class: NA ICAO Subsidiary Risk: NA ICAO ID Number: NA ICAO Packing Group: NA I.M.O.: I.M.O. Proper Shipping Name: Not Currently Regulated -- I.M.O. Hazard Class: NA I.M.O. Subsidiary Risk: NA I.M.O. ID Number: NA I.M.O. Packing Group: NA

Additional information

There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. _____________________________________________________________________________ 15. REGULATORY INFORMATION U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard.

Further information

Intended Use: Buffer References: 29 CFR 1900 - 1910 (Code of Federal Regulations - Labor). Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332-2983. TLV's Threshold Limit Values and Biological Exposure Indices for 1992-1993. American Conference of Governmental Industrial Hygienists, 1992. Technical Judgment. In-house information. Revision Summary Updates in Section(s) 14, _____________________________________________________________________________ Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume USER RESPONSIBILITY: Each user should read and understand this information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and regulations. THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF. HACH COMPANY ©2012 _____________________________________________________________________________ 1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION Product Name: Buffer Solution pH 10.01 ± 0.02 (NIST) Catalog Number: 2283636 Hach Company P.O.Box 389 Loveland, CO USA 80539 (970) 669-3050 8am - 4pm CST MSDS Number: M00370 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Mixture Intended Use: Buffer _____________________________________________________________________________ Emergency Telephone Numbers: (Medical and Transportation) (303) 623-5716 24 Hour Service (515)232-2533 This mixture is not classified as hazardous per GHS (UN publication ST/SG/AC.10/36/Add.3)

Hazard categories

Not applicable

2.2 Label elements

Not applicable

Hazard statements

Not applicable