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1H-Purine-2,6-dione,1,3-dibutyl-3,9-dihydro-

Avocado Research Chemicals Ltd - Material Safety Data Sheet 20491
1. IDENTIFICATION OF SUBSTANCE AND SUPPLIE Name On Label 1,3-Di-n-butylxanthine
Product Number 20491
Supplier Johnson Matthey Catalog Company Inc.
30 Bond Street, Ward Hill, Massachusetts, 01835-8099
Emergency Telephone Number: (978) 521-6300; CHEMTREC: (800) 424-9300

Alternative Names None in common use.

2. COMPOSITION AND INFORMATION ON COMPONENTS
Name 1,3-Di-n-butylxanthine
Minor Impurities Not determined
CAS No. 2850-36-4 EINECS No. Not listed EEC No.

3. HAZARDS IDENTIFICATION
Designation HARMFUL
Risk Phrases R20/21/22 Harmful by inhalation, in contact with skin and if swallowed.

4. FIRST AID MEASURES
Inhalation Remove to fresh air. Seek medical advice if symptoms persist.
Eye Contact Flush with copious amounts of water for at least 15 minutes. If symptoms arise, seek medical
advice.
Skin Contact Remove contaminated clothing. Wash affected area with soap and water. Rinse thoroughly. If
unusual symptoms are observed, seek medical advice. Show the physician the container details.
Ingestion Rinse out mouth and drink lots of water. In case of unusual symptoms, seek medical attention and
show physician the container details.

5. FIRE FIGHTING MEASURES
Extinguishing Medium Use fire fighting measures which suit the environment and take into account other materials which
may be involved. In general, water-based extinguishers should not be used for fires involving
organic materials. Use carbon dioxide or dry powder.
Protective Equipment Wear self-contained breathing apparatus and protective clothing.
Hazardous Products of Combustion may include: carbon monoxide, carbon dioxide, oxides of nitrogen, nitric acid, hydrogen
cyanide.

6. ACCIDENTAL RELEASE MEASURES
Personal Protection Avoid inhalation or contact of spilled material with skin or clothing. Wear protective equipment
including rubber gloves, and eye protection. Keep unprotected persons away.
Environmental Protection Take precautions to ensure product does not contaminate the ground or enter the drainage system.
Collection Mix with vermiculite or proprietary absorbent material and transfer to sealed containers for disposal.

7. HANDLING AND STORAGE
Handling Chemicals should be used only by those trained in handling potentially hazardous materials. Rubber
gloves, eye protection and protective clothing should be worn. Operations should be carried out in
an efficient fume hood or equivalent system.
Storage Store in tightly sealed containers in a cool place.
Protect from moisture.

8. EXPOSURE CONTROLS AND PERSONAL PROTECTION
Respiratory Avoid inhalation of product. Handle in an efficient fume hood or equivalent system.
Eye Avoid eye contact. Wear safety spectacles or goggles.
Hands and Body Avoid skin contact. Wear rubber gloves and protective clothing.

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20491 continued.
9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance Solid
Physical Constants Not available
Molecular formula C13H20N4O2 Formula Wt. 264.33
Water solubility Density Not available
Flash Point Not available

10. STABILITY AND REACTIVITY
Specific Hazard

Incompatibilities Strong oxidising agents.
Decomposition Hazardous products of decomposition may include: carbon monoxide, carbon dioxide, oxides of
nitrogen, nitric acid, hydrogen cyanide.

11. TOXICOLOGICAL INFORMATION
RTECS No. Not listed
Acute Toxicity LD50: No data reported
Harmful by inhalation, in contact with skin and if swallowed.

12. ECOLOGICAL EFFECTS
General Take care to prevent chemicals from entering the ground, water courses or drainage systems.

13. DISPOSAL CONSIDERATIONS
Disposal Disposal should be via an approved contractor and should take full account of local regulations.

14. TRANSPORT INFORMATION
UN Number 2811
Land Transport ADR/RIC Code/Class 6.1 Packing Group III
Maritime Transport IMDG Code/Class 6.1 Packing Group III
Air Transport IATA Code/Class 6.1 Packing Group III

15. REGULATORY INFORMATION
CAS No. 2850-36-4 EINECS No. Not listed EEC No. UN No. 2811 RTECS No. Not listed
Hazard Indication HARMFUL
Risk & Safety Phrases Harmful by inhalation, in contact with skin and if swallowed.
Wear suitable protective clothing.
TSCA Not listed. For research and development use only.

16. OTHER INFORMATION
It must be recognised that the physical and chemical properties of any product may not be fully understood and that new,
possibly hazardous products may arise from reactions between chemicals. The information given in this data sheet is based
on our present knowledge and shall not constitute a guarantee for any specific product features and shall not establish a
legally valid contractual relationship.
Date of Last Review: 3rd August 1998 Date Printed: 18th September 1998

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