Univar USA Inc.

                                                6100 Carillon Point

                                                Kirkland, WA 98033

                                                (425) 889-3400









For Emergency Assistance involving chemicals call - CHEMTREC (800) 424-9300

===========================================================================





The Version Date for this MSDS is : 09/27/2004



***************************************************************************

                       PRODUCT IDENTIFICATION

***************************************************************************



PRODUCT NAME:          ISOCYANURIC ACID, CYANURIC ACID



MSDS#:                 P21534VS



DATE ISSUED:           09/16/2003



SUPERSEDES:            07/28/1997



ISSUED BY:             006768



                       MATERIAL SAFETY DATA SHEET



Material Name: Isocanuric Acid Canuric Acid         ID: CI-205



* * * Section 1 - Chemical Product and Company Identification



Chemical Name: Isocyanuric Acid, Technical Granular and Powder

Product Use: For Commercial Use

Synonyms: Cyanuric acid; Tricarbimide; Triacyanic acid



Supplier Information

Chem One Ltd. (Importer of record)      Phone: (713) 896-9966

8017 Pinemont Drive, Suite 100            Fax: (713) 896-7540

Houston, Texas 77040-6519          Emergency # (800) 424-9300 or (703) 527-3887



General Comments:     FOR COMMERCIAL USE ONLY; NOT TO BE USED AS A PESTICIDE.



NOTE: Emergency telephone numbers are to be used only in the event of

chemical emergencies involving a spill, leak, fire, exposure, or accident

involving chemicals. All non-emergency questions should be directed to

customer service.



* * * Section 2 - Composition / Information on Ingredients



CAS #          Component             Percent

108-80-5       Isocyanuric Acid       > 98



Component Information/Information on Non-Hazardous Components

This product is considered hazardous under 29 CFR 1910.1200 (Hazard

Communication).



* * * Section 3 - Hazards Identification



Emergency Overview

Isocyanuric Acid is a white granular powder. Exposure to dusts may irritate

eyes, skin, and respiratory tract. As a finely-divided organic compound, the

accumulation of dusts of this product can create a serious hazard of air/dust

explosion. When heated to decomposition, this product may emit very toxic

fumes of carbon monoxide, carbon dioxide and nitrogen oxides. Use

extinguishing media suitable for surrounding fire.



Hazard Statements

CAUTION! MAY BE HARMFUL IF INHALED OR INGESTED. MAY CAUSE EYE, SKIN AND

RESPIRATORY IRRITATION. Avoid breathing dusts or fumes. Avoid contact with

eyes, skin and clothing. Keep container closed. Use only with adequate

ventilation. Do not take internally. Wash thoroughly after handling.



Potential Health Effects: Eyes

Exposure to particulates of this Isocyanuric Acid may cause mild irritation

of the eyes with symptoms such as stinging, tearing and redness.



Potential Health Effects: Skin

May cause mild skin irritation and redness. Repeated or prolonged contact may

cause dermatitis (red, dry, itchy skin).



Potential Health Effects: Ingestion

Ingestion of this Isocyanuric Acid (especially in large volumes) can irritate

the tissues of the mouth, esophagus, and other tissues of the digestive

system. Symptoms of exposure can include vomiting, diarrhea, and nausea.



Potential Health Effects: Inhalation

Breathing dusts or particulates generated by this Isocyanuric Acid can lead

to irritation of the nose, throat or respiratory system. Symptoms of severe

inhalation overexposures may include burning sensation, coughing, wheezing,

shortness of breath, headache, nausea and vomiting.



HMIS Ratings: Health Hazard: 2* Fire Hazard: I Physical Hazard: 0

Hazard Scale: 0 = Minimal I = Slight 2 = Moderate 3 = Serious 4 = Severe

* = Chronic hazard



* * * Section 4 - First Aid Measures * * *



First Aid: Eyes

In case of eye contact, flush with plenty of water for 15 minutes. If

irritation persists, seek medical attention.



First Aid: Skin

Remove all contaminated clothing. For skin contact, wash thoroughly with

soap and water for at least 20 minutes. Seek immediate medical attention if

irritation develops or persists.



First Aid: Ingestion



DO NOT INDUCE VOMITING. Have victim rinse mouth, if person is conscious.

Never give anything by mouth to a victim who is unconscious or having

convulsions. Contact a physician or poison control center if adverse affect

occurs.

First Aid: Inhalation

Remove source of contamination or move victim to fresh air. Apply artificial

respiration if victim is not breathing. Do not use mouth-to-mouth method if

victim ingested or inhaled the substance; induce artificial respiration with

the aid of a pocket mask equipped with a one-way valve or other proper

respiratory medical device. Administer oxygen if breathing is difficult.

Get immediate medical attention.



First Aid: Notes to Physician

Treatment is symptomatic and supportive. There is no specific antidote.



* * * Section 5 - Fire Fighting Measures * *



Flash Point: Not combustible.        Method Used:   Not applicable.

  Upper Flammable Limit (UEL):   Not applicable.

  Lower Flammable Limit (LEL):   Not applicable.



Auto Ignition: Not applicable.

Flammability Classification: Not applicable.



Rate of Burning:   Not applicable.



General Fire Hazards

It is important to note that as with all organic solids, large dust clouds

of this product have the potential to ignite explosively. When involved in a

fire, this material may decompose and produce irritating vapors, acrid smoke

and toxic gases.



Hazardous Combustion Products

When heated to decomposition product emits toxic fumes of Isocyanuric Acid

gas, carbon monoxide, carbon dioxide and nitrogen oxides.



Extinguishing Media

Use any method suitable for the surrounding fire and other materials involved

in the fire.



Fire Fighting Equipment/Instructions

Firefighters should wear full protective clothing including self-contained

breathing apparatus.



NFPA Ratings: Health: 2 Fire: I Reactivity: 0 Other:

Hazard Scale: 0 = Minimal I = Slight 2 = Moderate 3 = Serious 4 = Severe



* * * Section 6 - Accidental Release Measures * *



Containment Procedures

Stop the flow of material, if this can be done without risk. Contain the

discharged material. . If sweeping of a contaminated area is necessary use a

dust suppressant agent, which does not react with product (see Section 10 for

incompatibility information).



Clean-Up Procedures

Small releases can be cleaned-up in gloves, goggles and suitable body

protection. Shovel the material into waste container. Thoroughly wash the

area after a spill or leak clean-up. In case of a large spill (in which

excessive dusts can be generated), clear the affected area, protect people,

and respond with trained personnel. Place all spill residues in an appropriate

container and seal. Thoroughly wash the area after a spill or leak clean-up.



Evacuation Procedures

Evacuate the area promptly and keep upwind of the spilled material. Isolate

the spill area to prevent people from entering. Keep materials which burn

away from spilled material. In case of large spills, follow all facility

emergency response procedures.



Special Procedures

Remove soiled clothing and launder before reuse. Avoid all skin contact with

the spilled material. Have emergency equipment readily available.



* * * Section 7 - Handling and Storage



Handling Procedures

Do not breathe dust. Avoid all contact with skin and eyes. Wherever dust

clouds may be generated, eliminate sparks, flames and other ignition sources.

Use this product only with adequate ventilation. Wash thoroughly after

handling. Care should be taken to avoid the accumulation of dusts, which can

create a serious dust-explosion hazard. All equipment used in the handling

of this material should be electrically grounded.



Storage Procedures

Keep container tightly closed when not in use. Store containers in a cool,

dry location, away from direct sunlight, sources of intense heat, or where

freezing is possible. Material should be stored in secondary containers or

in a diked area, as appropriate. Keep this product in an air-tight

container.



Storage Procedures

Store containers away from incompatible chemicals (see Section 10, Stability

and Reactivity). Storage areas should be made of fire-resistant materials.

Post warning and "NO SMOKING" signs in storage and use areas, as appropriate.

Use corrosion-resistant structural materials, lighting, and ventilation

systems in the storage area. Floors should be sealed to prevent absorption

of this material. Inspect all incoming containers before storage, to ensure

containers are properly labeled and not damaged. Have appropriate

extinguishing equipment in the storage area (i.e., sprinkler system,

portable fire extinguishers). Empty containers may contain residual

particulates; therefore, empty containers should be handled with care. Never

store food, feed, or drinking water in containers that held this product.

Keep this material away from food, drink and animal feed. Do not store this

material in open or unlabeled containers. Limit quantity of material stored.



* * * Section 8 - Exposure Controls / Personal Protection * * *



Exposure Guidelines

A: General Product Information

   No ACGIH, NIOSH or OSHA guidelines listed for this product.

B: Component Exposure Limits

   There are no ACGIH, NIOSH or OSHA guidelines listed for this product's

   components. The exposure limits given are for Particulates Not Otherwise

   Classified (PNOC).



OSHA: 15 mg/m3 TWA (Total dust)

5 mg/m3 TWA (Respirable fraction)

DFG MAKs 4 mg/m3 TWA (Inhalable fraction)

1.5 mg/m3 TWA (Respirable fraction)



Engineering Controls

Use mechanical ventilation such as dilution and local exhaust. Use a

corrosion-resistant ventilation system and exhaust directly to the outside.

Supply ample air replacement. Provide dust collectors with explosion vents.

PERSONAL PROTECTIVE EQUIPMENT

The following information on appropriate Personal Protective Equipment is

provided to assist employers in complying with OSHA regulations found in

29 CFR Subpart I (beginning at 1910.132). Please reference applicable

regulations and standards for relevant details.



Personal Protective Equipment: Eyes/Face

Wear safety glasses with side shields or chemical goggles. If necessary,

refer to U.S. OSHA 29 CFR 1910.133.



Personal Protective Equipment: Skin

Wear appropriate work gloves for type of operation. Gloves should be tested

to determine their suitability for prolonged contact with this material. If

necessary, refer to U.S. OSHA 29 CFR 1910.138.



Personal Protective Equipment: Respiratory

None required where adequate ventilation conditions exist. No specific

guidelines are available. If airborne concentrations are above the applicable

exposure limits, use NIOSH-approved respiratory protection. An approved dust

and mist air-purifying respirator may be adequate. If respiratory protection

is needed, use only protection authorized in the U.S. Federal OSHA Standard

(29 CFR 1910.134), applicable U.S. State regulations. Oxygen levels below

19.5% are considered IDLH by OSHA. In such atmospheres, use of a full-

facepiece pressure/demand SCBA or a full facepiece, supplied air respirator

with auxiliary self-contained air supply is required under OSHA's Respiratory

Protection Standard (1910.134-1998). Personal Protective Equipment: General

Have an eyewash fountain and safety shower available in the work area. Use

good hygiene practices when handling this material including changing and

laundering work clothing after use.



* * * Section 9 - Physical & Chemical Properties * * *



Physical Properties: Additional Information

The data provided in this section are to be used for product safety handling

purposes. Please refer to Product Data Sheets, Certificates of Conformity

or Certificates of Analysis for chemical and physical data for determinations

of quality and for formulation purposes.



Appearance:                White granular powder

Odor:                      Odorless

Physical State:            Solid

pH:                        4.8 (saturated aqueous solutions)

Vapor Pressure:            Negligible.

Vapor Density:             Not applicable

Boiling Point:             Sublimes at > 329.12 deg C (625 deg F)

Melting Point:             360 deg C (680 deg F)

Solubility (H2O):          0.3 g/100 mL at 25 deg C

Specific Gravity:          1.768 (water = 1)

Freezing Point:            Not applicable

Particle Size:             Not available

Softening Point:           Not applicable

Evaporation Rate:          Not applicable

Bulk Density:              0.73-0.83 g/cc

Molecular Weight:          129.09

Percent Volatile:          Not available

Chemical Formula:          C3H3N303



* * * Section 10 - Chemical Stability & Reactivity Information *

Chemical Stability

Isocyanuric Acid is normally stable. Isocyanuric Acid is hygroscopic; it

absorbs moisture from air.



Chemical Stability: Conditions to Avoid

Moisture, heat and incompatible materials.



Incompatibility:

Incompatible with strong oxidizing agents. Isocyanuric Acid, Ammonia-chlorine

mixtures are explosive if warmed or if chlorine is in excess, owing to

formation of nitrogen trichloride. Hydrazine, hydoxylamine and calcium

nitride ignite in chlorines such as Isocyanuric Acid, and nitrogen triiodide

may explode on contact with chlorines. During chlorination of impure biuret

in water at 20 degrees C, a violent explosion occurred. This was attributed

to conversion of the cyanuric acid impurity (3%) to nitrogen trichloride

and spontaneous explosion of the latter. During chlorination of

2,4,6-triketo-hexahydro-1,3,5-triazine (cyanuric acid), presence of the

diaminoketo and aminodiketo analogues as impurities, or of an unusually low

pH value, may lead to formation of nitrogen trichloride.



Hazardous Decomposition

When heated to decomposition, product emits toxic fumes of Isocyanuric acid

gas, nitrogen oxides, carbon oxides.



Hazardous Polymerization

     Will not occur.



* * * Section 11 - Toxicological Information *



Acute and Chronic Toxicity

A: General Product Information

Standard Draize Test (Skin-Rabbit) 500 mg/24 hours: Mild; Rinsed with Water

(Eye-Rabbit) 20 mg/24 hours: Mild May cause eye, skin, nose, throat and

respiratory tract irritation.



Chronic: Long term skin overexposure to this product may lead to

dermatitis (red, itchy skin).

B: Component Analysis - LD50/LC50

Isocyanuric Acid (108-80-5):

LD50 (Oral-Rat) 7700 mg/kg; LD50 (Oral-Mouse) 3400 mg/kg; LD50

(Oral-Mammal-species unspecified) > 5 gm/kg; LD50

(Intravenous-Rat) > 100 mg/kg; LD50 (Intravenous-Mouse) > 500 mg/kg;

LD50 (Skin-Rabbit) > 5 gm/kg

B: Component Analysis - TDLo/TCLo/LD/LDLo

Isocyanuric Acid (108-80-5):

TDLo (oral, rat) = 55 g/kg/ 82 weeks/ intermittent; equivocal tumorigenic

agent; TDLo (subcutaneous, rat) = 27 g/kg/ 2 years/

intermittent; equivocal tumorigenic agent; TDLo (oral, mouse) = 130 g/kg/

2 years/ intermittent; equivocal tumorigenic agent; TDLo (skin, mouse)

= 2400 mg/kg; equivocal tumorigenic agent; TDLo (skin, mouse) = 138 g/kg/

2 years/ intermittent; equivocal tumorigenic agent; TD (oral, rat)

= 60,750 mg/kg/ 81 weeks/ intermittent; equivocal tumorigenic agent; TD

(subcutaneous, rat) = 36 g/kg/ 2 years/ intermittent; equivocal tumorigenic

agent.



Carcinogenicity

A: General Product Information

150-300 mg/kg Isocyanuric Acid was fed to rats, cysticerian sarcomas were

observed between 19-25 months. Fibroadenoma of mammary glands noted in 2

females. In mice fed 280-310 mg/kg, myeloid leukosis observed in 2/14 mice

that had survived 23 months. Feeding studies in rats and mice suggest lower

tumorigenic potential. Studies of subcutaneous application in mice at an

application rate of 550 to 620 mg/kg show no tumor induction. Dermal

application of two drops of 20% Isocyanuric Acid inbenzene 3 times/week to

mice is reported in which two animals developed liver tumors after 22 months.



B: Component Carcinogenicity

No information available.

Epidemiology

No information available.

Neurotoxicity

No information available.

Mutagenicity

No information available.



Teratogenicity

Studies of the teratogenic and reproductive effects of Isocyanuric Acid in

mice and rats examined show no dominant lethal response nor any significant

difference in reproductive parameters between the experimental and control

groups.



Other Toxicological Information

No information available.



* * * Section 12 - Ecological Information



Ecotoxicity

A: General Product Information

No information available.

B: Ecotoxicity

No ecotoxicity data are currently available for Isocyanuric Acid.



Environmental Fate

If released to the soil, Isocyanuric Acid is expected to be highly mobile.

If released to water, it will be essentially nonvolatile. Isocyanuric acid

biodegrades readily under a wide variety of natural conditions. If released

to the atmosphere, it will exist in both the vapor and particulate phases.

In the vapor phase, Isocyanuric Acid will degrade in the ambient atmosphere

by reaction with photochemically produced hydroxyl radicals with an estimated

half-life of 102 days. Physical removal of particulate Isocyanuric Acid from

air is likely to occur through wet and dry deposition. Isocyanuric Acid is

highly toxic to certain strains of barley and radishes.



* * * Section 13 - Disposal Considerations * * *



US EPA Waste Number & Descriptions

A: General Product Information

   Waste, if discarded, is not expected to be a characteristic hazardous

   waste under RCRA.

B: Component Waste Numbers

   No EPA Waste Numbers are applicable for this product's components.



Disposal Instructions

Review federal, provincial, and local government requirements prior to

disposal. Disposal by controlled incineration or secure landfill may be

acceptable.



* * * Section 14 - Transportation Information * * *



NOTE:   The shipping classification information in this section (Section 14)

is meant as a guide to the overall classification of the product. However,

transportation classifications may be subject to change with changes in

package size. Consult shipper requirements under I.M.O., I.C.A.O. (I.A.T.A.)

and 49 CFR to assure regulatory compliance.



US DOT Information

Shipping Name:       Non-regulated.

Hazard Class:        Not Applicable

UN/NA #:             Not Applicable

Packing Group:       Not Applicable

Required Label(s):   None

Additional Info.:    None.



International Air Transport Association (IATA)

For Shipments by Air transport: We classify this product as hazardous

(Class 9) when shipped by air because 49 CFR 173.140 (a). "For the purposes

of this subchapter, miscellaneous hazardous material (Class 9) means a

material which presents a hazard during transportation, but which does not

meet the definition of any other hazard class. This class includes: (a) Any

material which has an anesthetic, noxious, or other similar property which

could cause extreme annoyance or discomfort to a flight crew member so as to

prevent the correct performance of assigned duties."



Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s.

(isocyanuric acid)

Hazard Class:    9

UN:              UN 3077

Packing Group:   III

Passenger & Cargo Aircraft Packing Instruction: 911

Passenger & Cargo Aircraft Maximum Net Quantity: No Limit

Limited Quantity Packing Instruction (Passenger & Cargo Aircraft): Y911

Limited Quantity Maximum Net Quantity (Passenger & Cargo Aircraft): 30 kg

Special Provisions: A97

ERG Code: 9L



International Maritime Organization (I.M.O.) Classification

Isocyanuric Acid is not regulated under I.M.O.



* * * Section 15 - Regulatory Information *



US Federal Regulations

A: General Product Information

   No additional information.

B: Component Analysis

   This material contains no chemical required to be identified under SARA

   Section 302 (40 CFR 355 Appendix A), SARA



Section 313 (40 CFR 372.65) and/or CERCLA (40 CFR 302.4):

Isocyanuric Acid (108-80-5)



SARA 302 (EHS TPQ) There are no specific Threshold Planning Quantities for

Isocyanuric Acid. The default Federal MSDS submission and inventory

requirement filing threshold of 10,000 lbs. (4,540 kg) therefore applies,

per 40 CFR 370.20.



C: Sara 311/312 Tier II Hazard Ratings:



Component                CAS #     Fire   Reactivity   Pressure   Immediate   Chronic

                                 Hazard     Hazard      Hazard     Health     Health

                                                                   Hazard     Hazard

Isocyanuric Acid   108-80-5     No        No              No   Yes         Yes



State Regulations

A: General Product Information

   Other state regulations may apply.

B: Component Analysis - State

   The following components appear on one or more of the following state

   hazardous substances lists:



Component             CAS #     CA   FL   MA   MN   NJ   PA

Isocyanuric Acid   108-80-5     No   No   No   No   No   No



* * * Section 15 - Regulatory Information (Continued) * * *



Other Regulations

A: General Product Information

   Not applicable.

B: Component Analysis - Inventory

   Component              CAS #    TSCA    DSL    EINECS

   Isocyanuric Acid    108-80-5    Yes     Yes    Yes

C: Component Analysis - WHMIS IDL

Isocyanuric Acid is not on the Canadian Hazardous Products Act Ingredient

Disclosure List



ANSI Labeling (Z129.1):

CAUTION! MAY CAUSE EYE IRRITATION. MAY CAUSE RESPIRATORY TRACT IRRITATION.

PROLONGED OR REPEATED CONTACT MAY CAUSE SKIN IRRITATION. Avoid breathing dusts

and mists. Do not breathe dust. Do not taste or swallow. Do not get on skin or

in eyes. Keep container closed. Use only with adequate ventilation. Wash

thoroughly after handling. Wear gloves, goggles, faceshields, suitable body

protection, and NIOSH/MSHA-approved respiratory protection, as appropriate.

FIRST-AID: In case of contact, immediately flush skin or eyes with plenty of

water for at least 5 minutes while removing contaminated clothing and shoes.

If inhaled, remove to fresh air. If ingested, do not induce vomiting. Get

medical attention. IN CASE OF FIRE: Use water fog, dry chemical, CO2, or

"alcohol" foam. IN CASE OF SPILL: Absorb spill with inert material. Place

residue in suitable container. Consult Material Safety Data Sheet for

additional information.



* * * Section 16 - Other Information *



Other Information

Chem One Ltd. ("Chem One") shall not be responsible for the use of any

information, product, method, or apparatus herein presented ("Information"),

and you must make your own determination as to its suitability and

completeness for your own use, for the protection of the environment, and for

health and safety purposes. You assume the entire risk of relying on this

Information. In no event shall Chem One be responsible for damages of any

nature whatsoever resulting from the use of this product or products, or

reliance upon this Information. By providing this Information, Chem One

neither can nor intends to control the method or manner by which you use,

handle, store, or transport Chem One products. If any materials are mentioned

that are not Chem One products, appropriate industrial hygiene and other

safety precautions recommended by their manufacturers should be observed.

Chem One makes no representations or warranties, either express or implied

of merchantability, fitness for a particular purpose or of any other nature

regarding this information, and nothing herein waives any of Chem One's

conditions of sale. This information could include technical inaccuracies or

typographical errors. Chem One may make improvements and/or changes in the

product (s) and/or the program (s) described in this information at any

time. If you have any questions, please contact us at Tel. 713-896-9966 or

E-mail us at Safety@chemone.com. Revision date: 05/30/01



Key/Legend

EPA = Environmental Protection Agency; TSCA = Toxic Substance Control Act;

ACGIH = American Conference of Governmental Industrial Hygienists;

IARC = International Agency for Research on Cancer; NIOSH = National

Institute for Occupational Safety and Health; NTP = National Toxicology

Program; OSHA = Occupational Safety and Health Administration Contact: Sue

Palmer-Koleman, PhD    Contact Phone: (713)-896-9966



Revision log

08/04/00 3:50 PM SEP Changed company name, Sect 1 and 16, from Corporation

to Ltd.

05/30/01 9:31 AM HDF Checked exposure limits; made changes to Sect 9;

overall review, add SARA 311/312 Haz Ratings.

08/20/01 12:40 PM CLJ Add Shipments by Air information to Section 14, Changed

contact to Sue, non-800 Chemtrec Num.

02/15/02 11:01 AM HDF Addition of SARA Chronic Hazard Ratings.

09/16/03 9:45 AM HDF General review of entire MSDS. Up-graded Section

3 Health Hazard information, HMIS categories. Up-graded text in Section 4,

First Aid Information; Added PNOC exposure limits and references to OSHA PPE

CFRs in Section 8; Addition of currently available toxicity data to

Section 11. Addition of Atmospheric Fate data to Section 12. Up-Dated

Section 14 Transportation Information.









For Additional Information:

Contact: MSDS Coordinator - Univar USA

During business hours, Pacific Time - (425) 889-3400



NOTICE

Univar USA expressly disclaims all express or implied warranties of merchantibility and fitness

for a particular purpose with respect to the product or information provided herein, and shall

under no circumstances be liable for incidental or consequential damages.



Do not use ingredient information and/or ingredient percentages in this MSDS as a product

specification. For product specification information refer to a Product Specification Sheet and/or

a Certificate of Analysis. These can be obtained from your local Univar USA Sales Office.



All information appearing herein is based upon data obtained from the manufacturer and/or

recognized technical sources. While the information is believed to be accurate, Univar USA

makes no representations as to its accuracy or sufficiency. Conditions of use are beyond Univar

USA's control. Therefore, users are responsible to verify this data under their own operating

conditions to determine whether the product is suitable for their particular purposes, and they

assume all risks of their use, handling, and disposal of the product or from the publication or use

of, or reliance upon, information contained herein. This information relates only to the product

designated herein and does not relate to its use in combination with any other material or in any

other process.



END OF MSDS