Understanding Material Safety Data Sheets Training by University of Alaska Fairbanks

Understanding Material Understanding Material Safety Data SheetsSafety Data Sheets

University of Alaska FairbanksEnvironmental Health, Safety, and Risk Management

September 2010

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UNDERSTANDING MATERIAL SAFETY UNDERSTANDING MATERIAL SAFETY DATA SHEETSDATA SHEETS

The Federal Occupational Safety and Health Administration (OSHA) requires manufacturers or distributors of hazardous materials to assess the physical and health hazards of the chemical or product

This information must be included in the Material Safety Data Sheet (MSDS), which must be provided to the purchaser of the product with at least the initial shipment of the chemical

Outlined in the Hazard Communication Standard, Code of Federal Regulations (29CFR 1910.1200)

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UNDERSTANDING MATERIAL SAFETY UNDERSTANDING MATERIAL SAFETY DATA SHEETSDATA SHEETS

An MSDS must be obtained and maintained for every chemical/product used in the workplace

The MSDSs must be accessible to all personnel during their work hours

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MSDS Information by SectionMSDS Information by Section

The MSDS is typically organized into individual sections

NOTE! Not all MSDSs are the same! Section numbers and contents can vary with each MSDS

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MSDS Information: Section IMSDS Information: Section I

I. PRODUCT IDENTIFICATION

Product Name: Commercial or marketing name Synonym: Approved chemical name and/or synonyms Chemical Family: Group of chemicals with related physical and chemical properties

Formula: Chemical formula, if applicable; i.e., the conventional scientific definition for a material

CAS Number: Number assigned to chemicals or materials by the Chemical Abstracts Service. The number is unique to each chemical

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MSDS Information: MSDS Information: Section ISection I

I. PRODUCT IDENTIFICATION (CONT.)

Name, address and phone number of the manufacturer

Date MSDS was writtenNational Fire Protection Association rating

Storage Color Code

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MSDS Information: MSDS Information: Section IISection II

II. COMPONENT DATA (HAZARDOUS INGREDIENTS/IDENTITY INFO)

Describes the percent composition of the substance, listing chemicals present in the mixture

If it was tested as a mixture, lists chemicals which contribute to its hazardous nature

Otherwise, lists ingredients making up more than 1% and all carcinogens

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II. COMPONENT DATA (cont.)The OSHA permissible exposure limit (PEL).

National Institute for Occupational Safety and Health (NIOSH) recommended exposure limit (REL)

The American Conference of Governmental Industrial Hygienists (ACGIH) threshold limit value (TLV) will also be listed, if appropriate

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Regulated standard (it’s the law!)

Usually expressed in parts per million parts of air (ppm) or milligrams of dust or vapor per cubic meter of air (mg/m3)

Usually a time weighted average (TWA) - concentration averaged over an eight-hour day

II. COMPONENT DATA (cont.): OSHA PEL

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II. COMPONENT DATA (cont.): OSHA PEL

STEL or short term exposure limit may be listed STEL is a 15 minute TWA that should not be exceeded

A ceiling limit (C), is a concentration which may not be exceeded at any time

A skin notation means that skin exposure (including mucous membranes or eyes) is significant in contributing to the overall exposure

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II. COMPONENT DATA (cont.): NIOSH REL & ACGIH TLV

Recommended limitsTLV’s also use TWA, STEL, COften limits are lower than OSHA’s PELIt is UAF’s policy to strive to meet the more conservative standards

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MSDS Information: Section IIIMSDS Information: Section III

This section provides information for handling and storing a product. This information may be sometimes found under section VII (REACTIVITY)

III. PRECAUTIONS FOR SAFE HANDLING & STORAGE

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MSDS Information: Section IVMSDS Information: Section IV

IV. PHYSICAL DATA

Outlines the physical properties of the material

The information may be used to determine conditions for exposure

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MSDS Information: MSDS Information: Section IVSection IV

IV. PHYSICAL DATA (cont.)

The following information is usually included:Boiling Point: temperature at which liquid changes to vapor state

Melting Point: temperature at which a solid begins to change to liquid

Vapor Pressure: a measure of how volatile a substance is and how quickly it evaporates

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MSDS Information: MSDS Information: Section IV Section IV

IV. PHYSICAL DATA (cont.)Vapor Density (air=1): weight of a gas or vapor compared to weight of an equal volume of air

Specific Gravity (water=1): ratio of volume weight of material to equal volume weight of water

Solubility in Water: percentage of material that will dissolve in water, usually at ambient temperature

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Appearance/Odor: color, physical state at room temperature, size of particles, consistency, odor, as compared to common substances

Odor threshold refers to the concentration required in the air before vapors are detected or recognized

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Decomposition Temperature: The temperature at which a substance will break down or decompose into smaller fragments

% Volatile by Volume: Percentage of a liquid or solid, by volume, that evaporates at a temperature of 70 °F

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Evaporation Rate: rate at which a material will vaporize (change from liquid to vapor) compared to the rate of vaporization of a specific known material, usually n-butyl acetate. Expressed as a ratio

Viscosity: is a measure of a fluid's resistance to flow


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IV. PHYSICAL DATA (cont.)pH: describes the acidic or basic nature of a material. Scale ranges from 0 (acidic) to 14 (basic/alkaline) for an aqueous solution

Other Pertinent Physical Data: information such as freezing point is given, as appropriate

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MSDS Information: MSDS Information: Section V Section V

Includes general information about appropriate personal protective equipment for handling this material

V. PERSONAL PROTECTIVE EQUIPMENT

It is vital that this information be

followed

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MSDS Information: MSDS Information: Section VSection V

● V. PERSONAL PROTECTIVE EQUIPMENT (cont.)

Eye Protection: recommendations are dependent upon the irritancy, corrosiveness, and special handling procedures

Skin Protection: describes the particular types of protective garments and appropriate glove materials to provide personnel protection

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MSDS Information: MSDS Information: Section V Section V

V. PERSONAL PROTECTIVE EQUIPMENT (cont.)

Respiratory Protection: appropriate respirators for conditions exceeding the recommended occupational exposure limits

Contact EHS&RM (474-5413 or 474-6771) for information prior to the use of ANY respiratory protection equipment

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V. PERSONAL PROTECTIVE EQUIPMENT (cont.)

Ventilation: The use of some products may require specific ventilation requirements

General Exhaust: A system for exhausting air containing contaminants from a general work area. May be referred to as dilution ventilation

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V. PERSONAL PROTECTIVE EQUIPMENT (cont.): VentilationLocal Exhaust: A system for capturing and exhausting contaminants from the air at the point where the contaminants are produced i.e., capture style hoods for welding, grinding, sanding and operations or laboratory fume hoods for working with hazardous chemicals

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MSDS Information: Section VIMSDS Information: Section VI

Contains information regarding the recommended extinguishing media to be used in the event of a fire involving the material

It may also provide information regarding unusual fire and explosion hazards associated with the material

VI. FIRE and EXPLOSION HAZARD DATA

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MSDS Information: MSDS Information: Section VISection VI

Auto-ignition Temperature: the approximate temperature at which a flammable gas-air mixture will ignite without spark or flame

Flashpoint: the lowest temperature at which a liquid gives off enough vapor to ignite when a source of ignition is present

VI: FIRE and EXPLOSION HAZARD DATA (cont.)

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MSDS Information: MSDS Information: Section VI Section VI

VI. FIRE and EXPLOSION HAZARD DATA (cont.)

Combustible: A term used by NFPA, DOT and OSHA to classify liquids on the basis of a flash point range of 100 °F to 200 °F

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Flammable: Flammable Liquid is defined by NFPA as a liquid with a flash point below 100 °F

The OSHA definition is essentially the same

The DOT definition of flammable liquid means it has a flash point of 141 °F or less

The EPA identifies liquids with a flash point of 140 °F or less as flammable liquids

VI. FIRE and EXPLOSION HAZARD DATA (cont.)

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VI. FIRE and EXPLOSION HAZARD DATA (cont.)Flammable:

Flammable Solids, other than explosives, are solids that will ignite readily or are liable to cause fires under ordinary conditions of transportation through friction or retained heat from manufacturing or processing and which burn so vigorously as to create a serious transportation hazard (DOT Classification).

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• VI. FIRE and EXPLOSION HAZARD DATA (cont.) Flammable Limits:

LEL (Lower Explosive Limit): Lowest fuel-to-air concentration in which the flammable vapor will produce a flash of fire when an ignition source is present. At concentrations below the LEL, the mixture is too "lean" to burn

UEL (Upper Explosive Limit): Highest fuel-to-air concentration in which the flammable vapor will produce a flash of fire when an ignition source is present. At concentrations above the UEL the mixture is too "rich" to burn

LEL/UEL concentrations are typically expressed as a lower and upper percentage range in air

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• VI. FIRE and EXPLOSION HAZARD DATA (cont.)

Extinguishing Media: appropriate extinguishing agent(s) for the material

Fire-fighting Procedures: Appropriate equipment and methods are indicated for limiting hazards encountered in fire situations

Fire or Explosion Hazards: Hazards and/or conditions which may cause fire or explosions are defined

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MSDS Information: Section VIIMSDS Information: Section VII

VII. REACTIVITY DATA

Includes information regarding the stability of the material and any special storage or use considerations

Information may also be found in Section 3 Handling and Storage.

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MSDS Information: MSDS Information: Section VIISection VII

VII. REACTIVITY DATA (cont.)Stability:

”Unstable" indicates that a chemical may decompose spontaneously under normal temperatures, pressures, and mechanical shocks

Rapid decomposition produces heat and may cause fire or explosion

Conditions to avoid are listed in this sectionIncompatibility:

Certain chemicals, when mixed may create hazardous conditions. Incompatible chemicals should not be stored together.

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MSDS Information: MSDS Information: Section VIISection VII

VII. REACTIVITY DATA (cont.)

Decomposition Products: chemical substances which may be created when the chemical decomposes or burns

Polymerization: a chemical reaction in which smaller molecular constituents combine with themselves to form larger, long-chain molecular structures. Rapid polymerization may produce enough heat to cause containers to explode

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MSDS Information: Section VIIIMSDS Information: Section VIII

VIII. First Aid

Describes first aid procedures to be taken in the event of an exposure

Caution needs to be exercised so that those applying first aid do not become exposed to the material for which they are attempting treatment

In the event of an exposure, call 911 to request medical assistance

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MSDS Information: Section IXMSDS Information: Section IX

Defines the medical signs and symptoms that may be encountered with normal exposure or overexposure to the material or its components

Information on the toxicity of the substance may also be presented

IX. TOXICOLOGY & HEALTH HAZARD DATA

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MSDS Information by Section IXMSDS Information by Section IX

IX. TOXICOLOGY & HEALTH HAZARD DATA (cont.)

Acute Effect: An adverse effect on a human or animal body resulting from a single exposure with symptoms developing almost immediately or shortly after exposure

Chronic Effect: An adverse effect on a human or animal body resulting from prolonged or repeated exposure with symptoms that develop slowly over a long period of time

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IX. TOXICOLOGY & HEALTH HAZARD DATA (cont.)Corrosive: A liquid or solid that causes visible destruction or irreversible alterations in human skin tissue

Irritation: An inflammatory response or reaction of the eye, skin or respiratory system

Allergic sensitization: A process whereby on first exposure a substance causes little or no reaction, but upon repeated exposure may cause a marked adverse response

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IX. TOXICOLOGY & HEALTH HAZARD DATA (cont.)Carcinogen: A substance or agent capable of causing or producing cancer in humans or animals

Mutagen: A substance or agent capable of altering genetic material in a living organism

Teratogen: A substance or agent to which exposure to a pregnant female can result in malformations to the skeleton or soft tissue of the fetus

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Results of animal studies are most often given.

LD50 (lethal dose 50): is the dose of a substance which will cause the death of 50% of the experimental animals

LC50 (lethal concentration 50): is the concentration of the substance in air which will cause the death of 50% of the experimental animals

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LDLO (Lethal Dose Low): The lowest dose of a substance introduced by any route other than inhalation reported to have caused death in humans or animals

LCLO (Lethal Concentration Low): The lowest concentration of a substance in air that has been reported to have caused death in humans or animals

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TDLO (Toxic Dose Low): The lowest dose of a substance to which humans or animals have been exposed and reported to produce a toxic affect other than cancer.

Based upon LD50, LC50, LDLO, LCLO and TDLO, an estimate of the potential effects on human health is obtained.

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MSDS Information: Section XMSDS Information: Section X

This section contains information pertinent to DOT (Department of Transportation) regulations governing the transport of hazardous materials. These regulations can be found in 49 CFR parts 100 to 177

Please contact EHS&RM (474-5617 or 474-6771) if more information is needed or if shipping hazardous materials

X. TRANSPORTATION DATA

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MSDS Information: Section XIMSDS Information: Section XI

XI. SPILL & LEAK PROCEDURES

Outlines general procedures, precautions and methods for cleanup of spills.

Clean-up procedures for spills and leaks of hazardous materials are governed by a number of regulatory agencies.

Do not put yourself or others at risk if you are not trained or equipped to clean-up a spill. Contact EHS&RM for assistance or to report a spill.

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MSDS Information: Section XIIMSDS Information: Section XII

XII. WASTE DISPOSAL DATA

Contains guidelines for the disposal of the product or product container if it becomes a waste.

Hazardous waste is regulated by the EPA, (Environmental Protection Agency) under RCRA (Resource Conservation Recovery Act) regulations found in 40 CFR parts 260-272.Provisions for civil and criminal penalties for the improper storage and disposal of hazardous waste are included in these regulations.

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MSDS Information: Section XIIIMSDS Information: Section XIII

XIII. ADDITIONAL REGULATORY INFORMATION

Contains information relevant to compliance with other Federal or state laws such as TSCA (Toxic Substances Control Act), FIFRA (Federal Insecticide, Fungicide, Rodenticide Act) and others.

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MSDS Information: Section XIVMSDS Information: Section XIV

XIV. ADDITIONAL INFORMATION

This section, if present, will contain additional information regarding the product, which was not indicated in previous sections.

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MSDS Information: MSDS Information: Sections XIV & XVSections XIV & XV

XV. MAJOR REFERENCESLists some of the major references that have been consulted in preparation of the MSDS.

• XIV. ADDITIONAL INFORMATIONThis section, if present, will contain additional information regarding the product, which was not indicated in previous sections.

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http://www.uaf.edu/safety/laboratory-safety/material-safety-data-shee/

Understanding Material Safety Data Understanding Material Safety Data SheetsSheets

Where to go for more information?

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http://www.uaf.edu/safety/laboratory-safety/material-safety-data-shee/

Understanding Material Safety Data Sheets Training by University of Alaska Fairbanks

Health & Medicine

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