GIEMSA STAIN

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:  Azure mixture sicc. CAS No.: 51811-82-6 Weight:  291.80g/mol Formula: C14H14ClN3S

2. HAZARDS: GHS Class: Not a hazardous substance

HMIS Classification: Health hazard  1, Flammability   0,  Physical hazards   0			
NFPA Rating: Health hazard  1, Fire     0, Reactivity hazard   0
2.3: Other Hazards: none

3. COMPOSITION / INFO ON INGREDIENTS: 
Chemical 				 CAS No.	 		Percent		
Giemsa Stain		                  51811-82-6                                      

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 in pressure-demand, MSHA/NIOSH & full PPE. Irritating & highly toxic gases may be generated by thermal decomp/combustion. Special Hazards: Carbon, Nitrogen & sulfur oxides, Hydrogen chloride gas, hydrogen bromide gas. Extinguishing: Use water spray, dry chemical, carbon dioxide, or alcohol-resistant foam. Flash Pt: N/A Auto-ignition Temp: N/A Explosion Limits: N/A

6. ACCIDENTAL RELEASE: Info: Use proper PPE as indicated in Section 8. Spills: Vacuum or sweep up material and place into a suitable disposal container. Clean up dusty conditions. Provide ventilation.  

7. HANDLING & STORAGE: Handling: Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. 
Storage: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. 

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 PEL’s 
Giemsa Stain                             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 to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure. Respirators: A respiratory protection program that meets OSHA’s 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator’s use. 

9. PHYSICAL & CHEM: Dark green fine crystalline powder.  Melting Pt: 300˚C (572˚F) 

10. STABILITY & REACTIVITY: Stability: Stable under normal temperatures and pressures. Avoid: Incompatibles, dust generation, excess heat. Incompatibilities: Nitric acid, sulfuric acid, strong alkalies, reducing agents, dichromates, strong oxidizing agents. Haz Decomp: see section 5

11. TOXIC INFO: RTECS#: unlisted.  LD50/LC50: N/A Carcinogenicity: Not in ACGIH, IARC, NIOSH, NTP, or OSHA. Studies: Stomach irregularities 

12. ECOLOGICAL INFO:  Harmful to aquatic life

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: Acute Health Hazard, Chronic Health Hazard
Section 302 (RQ) & Section 302 (TPQ) None of the chemicals in this material/product have an RQ or TPQ. 
Section 313 No chemicals are reportable under Section 313. 
STATE CAS# 51811-82-6 is not present on state lists from CA, MN, MA, FL. 
PA & NJ Right to Know: Methylthioninium chloride  CAS# 61-73-4
2’,4’,5’,7’-Tetrabromo-3’,6’-dihydroxy-spiro[iso-benzofuran-1(3h),9-[9h]xanthen]-3-one disodium salt CAS#548-26-5
3-(Dimethylamino)-7-(methylamino)phenothiazin-5-ium, salt with 2’,4’,5’,7’-Tetrabromo-3’,6’-dihydroxy-spiro[iso-benzofuran-1(3h),9-[9h]xanthen]-3-one disodium salt    CAS# 62298-42-4
Giemsa Stain CAS# 51811-82-6
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: Not available. WGK (Water Danger/Protection) CAS# 51811-82-6: No information available.  
Canada - DSL.NDSL:  CAS# 51811-82-6 is listed on Canada’s DSL List. 
Canada – WHMIS:  This product has a WHMIS classification of D2B. 
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.