MSDS Number: S2060 * * * * * Effective Date: 11/21/08 * * * * * Supercedes: 01/25/06 SILVER METAL PRECIPITATED


SILVER METAL PRECIPITATED


1. Product Identification

Synonyms: Argentum; Silver
CAS No.: 7440-22-4
Molecular Weight: 107.87
Chemical Formula: Ag
Product Codes: 2118

2. Composition/Information on Ingredients


 
  Ingredient                                CAS No         Percent        Hazardous                                  
  ---------------------------------------   ------------   ------------   ---------   
 
  Silver                                    7440-22-4          100%          Yes                                                                 
 

3. Hazards Identification

Emergency Overview
--------------------------
WARNING! CHRONIC EXPOSURE AFFECTS SKIN, EYES AND RESPIRATORY TRACT. MAY CAUSE IRRITATION TO SKIN AND EYES.

SAF-T-DATA(tm) Ratings (Provided here for your convenience)
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Health Rating: 3 - Severe (Life)
Flammability Rating: 1 - Slight
Reactivity Rating: 1 - Slight
Contact Rating: 2 - Moderate
Lab Protective Equip: GOGGLES; LAB COAT; VENT HOOD; PROPER GLOVES
Storage Color Code: Green (General Storage)
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Potential Health Effects
----------------------------------

Inhalation:
See chronic effects.
Ingestion:
See chronic effects.
Skin Contact:
May cause irritation with redness and pain.
Eye Contact:
May cause irritation, redness and pain.
Chronic Exposure:
Prolonged or repeated inhalation, application or ingestion of silver and its compounds may cause a permanent bluish discoloration of the skin, eyes, and mucous membranes. This condition is called argyria. This effect can be either local or generalized. It appears that localized deposition occurs by penetration of fine, metallic particles and that generalized argyria occurs from inhalation or ingestion of silver salts. It is estimated that a gradual intake of 1 to 5g silver will lead to generalized argyria. Argyria of the eyes is not accompanied by vision loss although there may be some difficulty adapting to the dark.

There is some evidence for skin absorption. Repeated skin contact may also cause allergic contact dermatitis. Silver deposits in the respiratory tract may also cause a mild chronic bronchitis.
Aggravation of Pre-existing Conditions:
Persons with pre-existing skin disorders may be more susceptible to the effects of this material.

4. First Aid Measures

Inhalation:
Remove to fresh air. Get medical attention for any breathing difficulty.
Ingestion:
Give several glasses of water to drink to dilute. If large amounts were swallowed, get medical advice.
Skin Contact:
Wash exposed area with soap and water. Get medical advice if irritation develops.
Eye Contact:
Immediately flush eyes with plenty of water for at least 15 minutes, lifting upper and lower eyelids occasionally. Get medical attention if irritation persists.

5. Fire Fighting Measures

Fire:
In finely-divided form, this material may ignite when exposed to flame or by reaction with incompatible materials.
Explosion:
Not considered to be an explosion hazard.
Fire Extinguishing Media:
Use any means suitable for extinguishing surrounding fire. If material is burning, use dry powder (NOT water).
Special Information:
Use protective clothing and breathing equipment appropriate for the surrounding fire.

6. Accidental Release Measures

Ventilate area of leak or spill. Wear appropriate personal protective equipment as specified in Section 8. Spills: Pick up and place in a suitable container for reclamation or disposal, using a method that does not generate dust. US Regulations (CERCLA) require reporting spills and releases to soil, water and air in excess of reportable quantities. The toll free number for the US Coast Guard National Response Center is (800) 424-8802.

7. Handling and Storage

Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage. Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.

8. Exposure Controls/Personal Protection

Airborne Exposure Limits:
-OSHA Permissible Exposure Limit (PEL):
0.01 mg/m3 (TWA) for silver metal dust and fume as Ag

-ACGIH Threshold Limit Value (TLV):
0.1 mg/m3 (TWA) for silver metal

Ventilation System:
A system of local and/or general exhaust is recommended to keep employee exposures below the Airborne Exposure Limits. Local exhaust ventilation is generally preferred because it can control the emissions of the contaminant at its source, preventing dispersion of it into the general work area. Please refer to the ACGIH document, Industrial Ventilation, A Manual of Recommended Practices, most recent edition, for details.
Personal Respirators (NIOSH Approved):
If the exposure limit is exceeded and engineering controls are not feasible, a half-face high efficiency particulate respirator (NIOSH type N100 filter) may be worn for up to ten times the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. A full-face piece high efficiency particulate respirator (NIOSH type N100 filter) may be worn up to 50 times the exposure limit, or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. If oil particles (e.g. lubricants, cutting fluids, glycerine, etc.) are present, use a NIOSH type R or P filter. For emergencies or instances where the exposure levels are not known, use a full-facepiece positive-pressure, air-supplied respirator. WARNING: Air-purifying respirators do not protect workers in oxygen-deficient atmospheres.
Skin Protection:
Wear protective gloves and clean body-covering clothing.
Eye Protection:
Use chemical safety goggles. Maintain eye wash fountain and quick-drench facilities in work area.

9. Physical and Chemical Properties

Appearance:
Coarse, gray powder.
Odor:
Odorless.
Solubility:
Insoluble in water.
Density:
10.5
pH:
No information found.
% Volatiles by volume @ 21C (70F):
0
Boiling Point:
2212C (4014F)
Melting Point:
960.5C (1760F)
Vapor Density (Air=1):
No information found.
Vapor Pressure (mm Hg):
0 @ 77C (171F)
Evaporation Rate (BuAc=1):
No information found.

10. Stability and Reactivity

Stability:
Stable under ordinary conditions of use and storage.
Hazardous Decomposition Products:
May emit metallic fumes at high temperatures.
Hazardous Polymerization:
Will not occur.
Incompatibilities:
Acetylene (forms explosive silver acetylides), ammonia (becomes flammable), sulfuric acid, peroxides, carboxylic acids, chlorine trifluoride, oxalic and tartaric acids. Finely divided powder is flammable.
Conditions to Avoid:
Incompatibles.

11. Toxicological Information


No LD50/LC50 information found relating to normal routes of occupational exposure. Investigated as a tumorigen.
 
  --------\Cancer Lists\------------------------------------------------------
                                         ---NTP Carcinogen---
  Ingredient                             Known    Anticipated    IARC Category
  ------------------------------------   -----    -----------    -------------
  Silver (7440-22-4)                      No          No            None

12. Ecological Information

Environmental Fate:
This material is not expected to significantly bioaccumulate.
Environmental Toxicity:
No information found.

13. Disposal Considerations

Whatever cannot be saved for recovery or recycling should be managed in an appropriate and approved waste facility. Although not a listed RCRA hazardous waste, this material may exhibit one or more characteristics of a hazardous waste and require appropriate analysis to determine specific disposal requirements. Processing, use or contamination of this product may change the waste management options. State and local disposal regulations may differ from federal disposal regulations. Dispose of container and unused contents in accordance with federal, state and local requirements.

14. Transport Information

Not regulated.

15. Regulatory Information

 
  --------\Chemical Inventory Status - Part 1\---------------------------------
  Ingredient                                       TSCA  EC   Japan  Australia
  -----------------------------------------------  ----  ---  -----  ---------
  Silver (7440-22-4)                                Yes  Yes   No       Yes                                      
 
  --------\Chemical Inventory Status - Part 2\---------------------------------
                                                          --Canada--
  Ingredient                                       Korea  DSL   NDSL  Phil.
  -----------------------------------------------  -----  ---   ----  -----
  Silver (7440-22-4)                                Yes   Yes   No     Yes
 
  --------\Federal, State & International Regulations - Part 1\----------------
                                             -SARA 302-    ------SARA 313------
  Ingredient                                 RQ    TPQ     List  Chemical Catg.
  -----------------------------------------  ---   -----   ----  --------------
  Silver (7440-22-4)                         No    No      Yes        No
 
  --------\Federal, State & International Regulations - Part 2\----------------
                                                        -RCRA-    -TSCA-
  Ingredient                                 CERCLA     261.33     8(d) 
  -----------------------------------------  ------     ------    ------
  Silver (7440-22-4)                         1000       No         No                                                                 
 
 
Chemical Weapons Convention:  No     TSCA 12(b):  No     CDTA:  No
SARA 311/312:  Acute: Yes      Chronic: Yes  Fire: No  Pressure: No
Reactivity: No          (Pure / Solid) 


Australian Hazchem Code: None allocated.
Poison Schedule: None allocated.
WHMIS:
This MSDS has been prepared according to the hazard criteria of the Controlled Products Regulations (CPR) and the MSDS contains all of the information required by the CPR.

16. Other Information

NFPA Ratings: Health: 1 Flammability: 0 Reactivity: 0
Label Hazard Warning:
WARNING! CHRONIC EXPOSURE AFFECTS SKIN, EYES AND RESPIRATORY TRACT. MAY CAUSE IRRITATION TO SKIN AND EYES.
Label Precautions:
Avoid contact with eyes, skin and clothing.
Wash thoroughly after handling.
Avoid breathing dust.
Use with adequate ventilation.
Keep container closed.
Label First Aid:
In case of contact, immediately flush eyes or skin with plenty of water for at least 15 minutes. Get medical attention if irritation develops.
Product Use:
Laboratory Reagent.
Revision Information:
No Changes.
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Prepared by: Environmental Health & Safety
Phone Number: (314) 654-1600 (U.S.A.)