CALCIUM SULFATE DIHYDRATE ACS
    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, 2024
1. PRODUCT: Syn: Gypsum , Alabaster, C.I. 77231, C.I. Pigment White 25, Sulfuric acid, Calcium salt.  EC-No.  231-900-3  CAS No.: 7778-18-9 (Anhydrous); 10101-41-4 (Dihydrate)   Weight: 172.17      Formula: CaSO4*2H2O

2.HAZARDS: Not a dangerous substance according to GHS

Potential Health Effects: Eyes: May cause eye irritation.    Skin: May cause skin irritation. Chronic:  Not available.
Ingestion: May cause irritation of the digestive tract.  The toxicological properties of this material have not been fully investigated.   Inhalation: Dust is irritating to the respiratory tract. May cause respiratory tract irritation.
2.3: Other Hazards: none

3. COMPOSITION, INFO:
Chemical Name 			CAS No.		Percent			
 Calcium sulfate dihydrate		10101-41-4	    98%			      	

4. FIRST AID: Eyes:  Flush eyes with plenty of water as a precaution.  Skin: If contact, flush skin with plenty of soap & water. Ingestion: If victim is conscious and alert, give water to rinse mouth. Do NOT induce vomiting. NEVER give anything by mouth to an unconscious person.  Inhalation: Remove to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.    Physician: Treat symptomatically and supportively.

5. FIRE FIGHTING: Info: wear a self-contained breathing apparatus, MSHA/NIOSH approved or equivalent, and full protective gear. noncombustible.   Extinguishing: Use water spray, alcohol-resistant foam, carbon dioxide or dry chemical. hazards:  Sulfur oxides, Calcium oxide. 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 spills immediately, observing precautions in the Protective Equipment section. Avoid generating 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. Keep container tightly closed. 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 safety shower. Use adequate ventilation to keep airborne concentrations low.
Chemical Name			ACGIH		NIOSH			OSHA - Final PEL’s
Calcium sulfate dihydrate	            10 mg/m3 TWA	TWA 5mg/m3		15 mg/m3 TWA (total dust);
TWA 10/m3                          5 mg/m3 TWA (respirable 
(Nasal symptoms)                fraction).
OSHA Vacated PELs: Calcium sulfate dihydrate: No OSHA Vacated PELs are listed for this chemical. Calcium sulfate anhydrous: 15 mg/m3 TWA; 5 mg/m3 TWA (respirable fraction).

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. 0.11mm nitrile Clothing: Wear appropriate protective clothing to prevent skin exposure. 
Respirators: Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary. 

9. PHYSICAL & CHEM: White powder Relative Density: 2.32 g/cm3

10. STABILITY & REACTIVITY: Stability: Stable at room temp in closed containers under normal storage & handling conditions. Avoid: Dust generation. Oxidizing & reducing agents may destroy colors. Incompatibilities: No significant incompatibilities identified with common materials & contaminants. Hazardous Decomp: Sulfur dioxide, calcium oxide.

11. TOXICOLOGICAL: RTECS: EW4150000    LD50/LC50: Not available.
Carcinogenicity: Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA. 

12. ECOLOGICAL: No information available.

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 INFO:   Not dangerous goods.

15. REGULATORY INFO: SARA 311/312 Hazard:  No SARA HAZARD
SARA Section 302 Extremely Hazardous Substances: None of the chemicals in this product have a RQ/ TPQ. 
Section 313   No chemicals are reportable under Section 313. 
STATE   CAS# 10101-41-4 can be found on the following state right to know lists: 
Mass Right to Know:  Calcium sulfate.  CAS#10101-41-4 Rev. 04/1/1994
NJ Right to Know:  Calcium sulfate. CAS#10101-41-4 Rev. 04/1/1994
Pa Right to Know:  Calcium sulfate. CAS#10101-41-4 Rev. 04/1/1994
California No Significant Risk Level: None of the chemicals in this product are listed. 

EUROPEAN/INTERNATIONAL REGULATIONS European Labeling in Accordance with EC Directives 
Hazardous Symbols: Not available. 		WGK (Water Danger/Protection)    CAS# 10101-41-4: 0
Canada - DSL/NDSL   CAS# 10101-41-4  is not listed on Canada’s DSL List. 
Canada – WHMIS: Not available.
This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the MSDS contains all of the information required by those regulations.
CAS# 10101-41-4      is not listed on Canada’s 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