MATERIAL SAFETY DATA SHEET

I.  PRODUCT IDENTIFICATION

ESPI Metals

1050 Benson Way, Ashland, OR 97520

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Product Name:        Arsenic

Formula:                 As

CAS Number:          7440-38-2

II.  HAZARDOUS INGREDIENTS 

Hazardous Components:   Arsenic

Percent (%):                     0-100

OSHA/PEL:                        10 ug/m³

ACGIH/TLV:                       0.01 mg/m³

HMIS Ratings (Powder):

Health:                               3

Flammability:                    2

Reactivity:                         1

HMIS Ratings (Solid):

Health:                               2

Flammability:                    0

Reactivity:                         1

III.  PHYSICAL DATA 

Boiling Point:                    613 ^oC (Sublimes)

Melting Point:                   817 ^oC

Specific Gravity:              5.72 g/cc

Vapor Pressure:               1mm @ 372

Solubility in H₂O:              Insoluble

Appearance and Odor:     Steel-grey brittle solid, no odor.

IV.  FIRE AND EXPLOSION HAZARD DATA 

Flash Point:  N/A

Autoignition Temp: N/A

Flammability:  Lower:  N/A       Upper:  N/A

Extinguishing Media:  Do not use water.  Use carbon dioxide, dry powder extinguishing agents, dry sand, dry ground dolomite.

Special Firefighting Procedures:  Firefighters must wear full face, self-contained breathing apparatus and full protective clothing if involved in fire.

Unusual Fire and Explosion Hazard:  Slight explosion hazard in the form of a dust when exposed to flame.  Moderate fire hazard in the form of dust when exposed to heat or flame or by chemical reaction.  Emits highly toxic fumes when heated or on contact with acid or acid fumes.

V.  HEALTH HAZARD INFORMATION 

Effects of Exposure:

Acute arsenic poisoning (from ingestion) results in marked irritation of  the stomach and intestines with nausea, vomiting and diarrhea.  In severe cases the vomitus and stools are bloody and the patient goes into collapse and shock with weak, rapid pulse, cold sweats, coma and death.  Chronic arsenic poisoning, whether through ingestion or inhalation, may manifest itself in many different ways.  There may be disturbances of the digestive system such as loss of appetite, cramps, nausea, constipation or diarrhea.  Liver damage may occur, resulting in jaundice.  Disturbances of the blood, kidneys and nervous system are not infrequent.  Arsenic can cause a variety of skin abnormalities including itching, pigmentation and even cancerous changes.  A characteristic of arsenic poisoning is the great variety of symptoms that can be produced.  A recognized carcinogen of the skin, lungs, liver.  An experimental carcinogen of the mouth, esophagus, larynx, bladder and para nasal sinus.  (Sax, Dangerous Properties of Industrial Materials)

Acute Effects:

Inhalation:  May cause irritation to the respiratory system.

Ingestion:  May cause systemic gastrointestinal and skin effects and acute arsenic poisoning.

Skin:  May cause irritation and skin abnormalities.

Eye:  May cause irritation.

Chronic Effects:

Inhalation:  May cause chronic arsenic poisoning, ulceration of the nasal septum, liver damage and cancer/disease of the blood, kidneys and nervous system.

Ingestion:  May cause chronic arsenic poisoning, gastrointestinal disturbances, liver damage and cancer/disease of the blood, kidneys and nervous system.

Skin:  May cause irritation, occasional ulceration, spotty pigmentation, dermatitis, skin cancer and keratosis (especially on soles and palms).

Eye:  No chronic health effects recorded.

Other Health Hazards:  There is evidence that arsenic may cross the placental barrier.  Arsenic is a neurotoxin.  Poisoning may affect the heart, GI system, kidneys and liver.

Routes of Entry:  Inhalation, ingestion.

Medical Conditions Generally Aggravated by Exposure:  Pre-existing respiratory and skin disorders.

Carcinogenicity:  NTP:  Yes      IARC:  Yes        OSHA:  Yes

EMERGENCY AND FIRST AID PROCEDURES:

INHALATION:  Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult, seek medical attention immediately.

INGESTION:  Give 1-2 glasses of milk or water and induce vomiting, seek immediate medical attention.  Never induce vomiting or give anything by mouth to an unconscious person.

SKIN:  Remove contaminated clothing, brush material off skin, wash affected area with soap and water and rinse thoroughly.  Seek immediate medical attention.

EYE:  Immediately flush eyes, including under eyelids, with large amounts of water for at least 15 minutes.  Seek medical attention.

VI.  REACTIVITY DATA 

Stability:  Stable

Conditions to Avoid:  Heat, exposure to air.

Incompatibility (Materials to Avoid):  Acids, acid fumes, oxidizing agents, halogens, bromine azide, palladium, zinc, platinum, nitrogen trichloride, silver nitrate, acetylenes, chlorosylamine, chromium (VI) oxide, sodium peroxide, dirubidium acetylide.

Hazardous Decomposition Products:  At temperatures above the melting point, arsenic oxide fumes may be evolved.  Under reducing conditions (i.e. any strong acid or base plus an active metal) or in the presence of nascent hydrogen, highly toxic arsine gas may be evolved.

Hazardous Polymerization:  Will not occur.

VII.  SPILL OR LEAK PROCEDURES 

Steps to Be Taken in Case Material Is Released or Spilled:  Wear appropriate protective equipment specified in section VIII.  Any cleanup method which keeps dust to a minimum is acceptable.  Vacuuming with a HEPA filter is preferred for dust.  Use approved respiratory protection if possibility of dust/fume exposure exists.  Do not use compressed air for cleaning.

Waste Disposal Method:  Dispose of in accordance with all State, Federal and Local regulations.

VIII.  SPECIAL PROTECTION INFORMATION

Respiratory Protection:  Where airborne exposures may exceed OSHA/ACGIH permissible air concentrations, the minimum respiratory protection recommended is a negative pressure air purifying respirator with cartridges that are NIOSH/MSHA approved against dust, fumes and mists having a TWA less than 0.05 mg/m³.

Ventilation:  Glove bag or box preferred.

Protective Gloves:  Rubber

Eye/Face Protection:  ANSI approved safety goggles with a full face shield.

Other Protective Equipment:  Full protective clothing, lab coat and apron, flame and chemical resistant coveralls, is recommended for exposures that exceed permissible air concentrations.  All contaminated clothing should be removed before leaving plant premises.

IX.  SPECIAL PRECAUTIONS 

Work Practices:  Avoid inhalation or ingestion.  Practice good housekeeping and personal hygiene procedures.  No tobacco or food in the work area.  Wash thoroughly before eating or smoking.  Shower and change clothes at end of work shift.  Do not wear contaminated clothing home.  Do not blow dust off clothing with compressed air.  Maintain eyewash capable of sustained flushing, safety drench shower and hygienic facilities for washing.

Danger:  Poison, causes skin and lung cancer.

SARA Title III Sec. 313:    Yes

TSCA Listed:                      Yes

DOT Regulations:

Hazard Class:                    6.1

Identification Number:     UN1558

Packing Group:                  II

Proper Shipping Name:     Arsenic

The above information is believed to be correct, but does not purport to be all inclusive and shall be used only as a guide.  ESPI shall not be held liable for any damage resulting from handling or from contact with the above product.

Issued by:                          S. Dierks

Revised/Verified:                January 2009