GUANINE

Safety Data Sheet
Emergency Telephone Number: CHEMTREC 1-800-424-9300       For Information call: DUDLEY 732-886-3100       
      DUDLEY CORPORATION
           	   125 Kenyon Drive
       				         	   Lakewood, New Jersey 08701
Effective Date: January 1, 2025	
1. PRODUCT: Syn:  2-Amino-6-hydroxypurine CAS No.: 73-40-5 E-C No.:200-799-8 Weight:  151.13g/mol 	Formula: C5H5N5O

2. HAZARDS: GHS:  Skin irritation (Cat 2) Eye irritation (Cat 2A) Specific Organ toxicity – single exposure (Cat 3) Respiratory system
Pictogram: 					
Signal Word Warning
Hazard Statement: H315: Causes skin irritation. H319: Causes serious eye irritation H335: May cause respiratory irritation
Precautionary Statement: P261: Avoid breathing dust/fume/gas/mist/vapors/spray. P264: Wash skin thoroughly after handling. P271: Use only outdoors or in a well-ventilated area. P280” Wear PPE P302+P352: If on skin: wash with plenty of soap and water. P304+P340+P312: if inhaled: remove person to fresh air& keep comfortable for breathing. Call a poison center. P305+P351+P338: If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do so. Continue rinsing. P332+P313: If skin irritation occurs Get medical advice. P337 + P313: if eye irritation occurs get medical advice. P362: Take off contaminated clothing P403+P233: Store in a well-ventilated place. Keep container tightly closed. P405: Store locked up. P501: Dispose of contents/container to an approved waste disposal plant. 

HMIS Classification: Health hazard  0, Flammability   0,  Physical hazards   0			
NFPA Rating: Health hazard  0, Fire     0, Reactivity hazard   0
2.3: Other Hazards: none

3. COMPOSITION / INFO: 
Chemical 			 CAS No.	 	Percent		
Guanine		                		73-40-5                    99%                  

4. FIRST AID: Eyes: rinse with plenty of water Skin: Rinse with plenty of soap & water Ingestion: Do not induce vomiting w/o medical advice. Rinse with water.  Inhalation: Move to fresh air.  Physician: Treat symptomatically & supportively. 

5. FIRE FIGHTING: Info: wear a self-contained breathing apparatus if necessary. Hazards: Carbon & Nitrogen oxides Extinguishing: Use water spray, dry chemical, carbon dioxide, or alcohol-resistant foam.

 6. ACCIDENTAL RELEASE: Info: Use proper PPE as indicated in Section 8. 
Spills/Leaks: Clean up spills immediately, observing precautions in the Protective Equipment section. Sweep up, then place into a suitable container for disposal. Provide ventilation.

7. HANDLING & STORAGE: Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. Storage: Store in a cool, dry place. Store in a tightly closed container.

8. EXPOSURE: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low. 
Chemical 		ACGIH			NIOSH		OSHA - Final / Vacated PELs
Guanine			None listed		None listed		None listed

PPE: Eyes:  Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA’s eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. 0.11mm thick nitrile Clothing: Wear appropriate protective clothing to minimize contact with skin.  Respirators: A respiratory protection program that meets OSHA’s 29 CFR 1910.134 and ANSI Z288.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator’s use. Wear a NIOSH/MSHA or European Standard EN149 approved full-face piece airline respirator in the positive pressure mode with emergency escape provisions.

9. PHYSICAL & CHEM: Appearance: White to off-white to cream yellow crystals. Melting Pt: 360˚C (572˚F)

10. STABILITY & REACTIVITY: Stability: Stable under normal temperatures and pressures. Avoid: Incompatibles, strong oxidants. Incompatibilities: Strong oxidizing agents. Haz Decomp: see section 5

11. TOXICOLOGICAL INFO: RTECS#: MF8260000 LD50 / LC50 N/A Carcinogenicity: Not listed by ACGIH, IARC, NIOSH, or OSHA. Rat- subcutaneous, tumorigenic   Mutagenicity: Cytogenetic analysis		

12. ECOLOGICAL INFO: N/A

13. DISPOSAL CONSIDERATIONS: Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3. Additionally, waste generators must consult state and local hazardous waste regulations to ensure complete and accurate classification. RCRA P-Series: None listed. RCRA U-Series: None Listed

14. TRANSPORT REGULATIONS. Not regulated

15. REGULATORY INFO: SARA 311/312:  None Section 302 None of the chemicals in this product have a TPQ/RQ.
Section 313 No chemicals are reportable under Section 313.
STATE CAS# 73-40-5 is not present on state lists from CA, MN, MA, FL. 
PA & NJ Right to Know:	Guanine  CAS#73-40-5
California Prop.65: None of the chemicals are known to cause cancer, birth defects, or any other reproductive harm.

EUROPEAN/INTERNATIONAL REGULATIONS European Labeling in Accordance with EC Directives
Hazard Symbols: XI Irritant	WGK (Water Danger/Protection) CAS# 73-40-5: No information available.
Canada - DSL/NDSL CAS# 73-40-5 is listed on Canada’s DSL List.
Canada – WHMIS WHMIS: Not available.Canadian ingredient Disclosure List

16. DISCLAIMER INFO: DUDLEY CORPORATION provides the information herein in good faith but makes no representation as to its comprehensiveness or accuracy. This document is intended only as a guide to the appropriate precautionary handling of the material by a properly trained person using this.  Individuals receiving the information must exercise their independent judgment in determining its appropriateness for a particular purpose. DUDLEY CORPORATION makes no representations or warranties, either expressed or implied, including without limitation and warranties of merchantability, fitness for a particular purpose with respect to the information set forth herein or to the product to which the information refers. Accordingly, DUDLEY CORPORATION will not be responsible for damages resulting from the use of or reliance upon this information.