http://www.talkinternational.com/health/manufacturers_warning_mercury.htm

Dispersalloy has two MSDSs: Dispersalloy Dispersed Phase Alloy or
Mercury

MATERIAL SAFETY DATA SHEET

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1.1 Product Trade Name: DISPERSALLOY® DISPERSED PHASE ALLOY Tablets,
Powder and Capsules
1.2 Part (Item) Number:

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SECTION I

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1.3 Division Name : Dentsply Caulk
1.4 Address : 38 West Clarke Avenue

1.5 Emergency phone number : (800) 424-9300 (Chemtrec)
1.6 Phone number for information : (302) 422-4511
1.7 Date prepared : 9/20/95 Dated Revised 9/24/97

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SECTION II - Hazardous Ingredients/Identity Information

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Hazardous Components OSHA PEL ACGIH TLV Other limits

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SECTION III - Physical/Chemical Characteristics

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3.1 Boiling point   : N.A.
3.2 Vapor pressure  : N.A.
3.3 Vapor density  : N.A.
3.4 Solubility in water  : Not Soluble
3.5 Appearance and odor  : A metallic grayish free flowing powder with
no odor.
3.6 Specific Gravity  : 8.0 g/cm(3)
3.7 Melting point  : approximately 1000ºC
3.8 Evaporation rate  : N.A.

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SECTION IV - Fire and Explosion Hazard Data

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4.1 Flash point (method used) : N.A.
4.2 Flammability (explosive limits) : N.A.
 LEL: N.A. UEL: N.A.
4.3 Extinguishing media : Use dry powder extinguishing media.
4.4 Special fire fighting procedures : Firefighters should wear full
protective clothing including self contained breathing apparatus.
4.5 Unusual fire and explosion hazards : Large quantities of metal
powder in air may cause a fire or explosion hazard due to dusting.
Molten metal can ignite combustibles.

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SECTION V - Reactivity Data

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5.1 Stability : Unstable: Stable: X
5.2 Conditions to avoid (stability) : Prolonged exposure to heat
greater than 60ºC. Contact with strong mineral acids will release
flammable hydrogen gas.
5.3 Incompatibility (materials to avoid) : Acetylene, hydrogen
peroxide, ethylenimine or mineral acids.
5.4 Hazardous decomposition or byproducts : None
5.5 Hazardous polymerization May occur:  Will not occur:X
5.6 Conditions to avoid (polymerization) : None

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SECTION VI - Health Hazard Data

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6.1 Route(s) of entry: Inhalation?: Yes Skin?: Possible Ingestion?: Yes

6.2 Health hazards (acute and chronic) : EYES: (Powder only) May cause
irritation upon contact. SKIN: Prolonged or repeated contact may cause
irritation or allergic reaction. Avoid repeated contact with skin,
chronic exposure may cause argyria (grayish-blue pigmentation of the
skin). No known serious toxic symptoms have been noted following
exposure. INHALATION: (Powder only) Inhalation of alloy powder may
cause irritation of mucous membranes. Chronic respiratory ailments
prolonged excessive exposure. INGESTION: Ingestion of alloy may cause
GI tract irritation, nausea or diarrhea. TOXICITY: (LD50, LC50, etc)
5000 mg/kg
6.3 Carcinogenicity NTP?: Not Listed  IARC monographs?: No  OSHA
regulated?: No
6.4 Signs and symptoms of exposure : EYES: (Powder only) Slight
reddening of the eyes. May temporarily irritate the eyes. SKIN: Fine
alloy powder may temporarily irritate the skin. Avoid repeated contact
with skin. INHALATION: (Powder only) Inhalation of alloy powder may
cause irritation of mucous membranes. INGESTION: Ingestion of alloy may
cause GI tract irritation, nausea or diarrhea. Not hazardous when
ingested.
6.5 Medical conditions generally aggravated by exposure : Skin contact
by sensitive individuals may cause allergic reaction.
6.6 Emergency first aid procedures : EYES: Immediately flush eyes with
copious quantities of water for 15 minutes. Seek medical attention if
irritation or discomfort persists. SKIN: Wash thoroughly with soap and
water. INHALATION: Gently blow nose and irrigate with clean water.
Consult physician if irritation persists. INGESTION: If shallowed, seek
medical attention.

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SECTION VII - Precautions for safe handling and use

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7.1 Steps to be taken in case material is released or spilled: Provide
exhaust ventilation when possible. Pick up powder by carefully
sweeping, vacuuming or wet mopping spilled material into an acceptable
waste container. Avoid generating airborne dust.

7.2 Waste disposal methods: The product or individual components may be
salvaged or reclaimed for reuse. Waste material may be disposed of in
accordance with Federal, State and Local regulations.

7.3 Precautions to be taken in handling and storage: Observe normal
warehouse handling procedures. Store in a cool, dry area. Store away
from foodstuffs and beverages. Avoid contact or generation of dust.

7.4 Other precautions: None known.

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SECTION VIII - Control Measures

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8.1 Respiratory protection : NIOSH approved respirators are required
when concentrations of dust and/or fumes exceed TLV.
8.2 Ventilation : Local exhaust
8.3 Protective Gloves : Rubber gloves.
8.4 Eye protection : Safety glasses.
8.5 Other protective clothing or equipment : Rubber apron.
8.6 Work/Hygienic practices :Observe normal care when working with
chemicals.

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NFPA Hazard
Classifications

Health 1

Flammability 0

Reactivity 0

Specific Hazard N.A.

NFPA - National Fire Protection Association
N.A. - Not Applicable
N.E. - Not Established
556899 (R10/97)

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MATERIAL SAFETY DATA SHEET

1.1 Product Trade Name :Mercury
1.2 Part (Item) Number :904061
SECTION I
1.3 Division Name :DENTSPLY CAULK
1.4 Address :38 West Clarke Avenue
 :Milford DE 19963-0359
1.5 Emergency phone number :(800) 424-9300 (Chemtrec)
1.6 Phone number for information :(302) 422-4511
1.7 Date prepared :5/29/97
SECTION II - Hazardous Ingredients/Identity Information
Hazardous Components
OSHA PEL
ACGIH TLV
Other limits

SECTION III - Physical/Chemical Characteristics
3.1 Boiling point : 676°F, 357° C 3.6 Specific Gravity : 13.6 g/cm3

3.2 Vapor pressure : .0019 [mm of Hg] 3.7 Melting point : -38° F,
39°C
3.3 Vapor density : 1.015 {Air=1] 3.8 Evaporation rate : -1 [Butyl
Acetate=1]</TD
3.4 Solubility in water : insoluble
3.5 Appearance and odor : Silver-white, heavy mobile, metallic liquid,
no odor.
SECTION IV - Fire and Explosion Hazard Data

4.1 Flash point (method used) : N.A.
4.2 Flammability (explosive limits) : N.A.

LEL: N.A. UEL: N.A.
4.3 Extinguishing media : Dry chemical, carbon dioxide, water spray, or
foam. For larger fires, use water spray, fog, or alcohol foam.
4.4 Special fire fighting procedures : Move containers from fire area
if possible. Cool containers exposed to flames with water from side
until well after fire is out. Avoid breathing corrosive and poisonous
vapors, keep upwind.
4.5 Unusual fire and explosion hazards : Slight fire and explosion
hazard when exposed to heat or flame.
SECTION V - Reactivity Data
5.1 Stability :Unstable: Stable: X
5.2 Conditions to avoid (stability) : High temperatures.
5.3 Incompatibility (materials to avoid) : see attachment
5.4 Hazardous decomposition or byproducts : Not applicable: boils away
unchanged at 357° C.
5.5 Hazardous polymerization May occur: Will not occur: X
5.6 Conditions to avoid (polymerization) : Contact with or storage with
incompatible materials, and excessive heat.
SECTION VI - Health Hazard Data
6.1 Route(s) of entry: : Inhalation?: Yes Skin?: Yes Ingestion?: Yes
6.2 Health hazards (acute and chronic) : Mercury poisoning, usually
chronic, see attachment.
6.3 Carcinogenicity NTP?: Not listed IARC monographs?: Not listed

 OSHA regulated?: Yes
6.4 Signs and symptoms of exposure : See attachment.
6.5 Medical conditions generally aggravated by exposure : Known
sensitization to metals, persons with chronic respiratory disease,
nervous system disorders, and kidney disease.
6.6 Emergency first aid procedures See attachment.
SECTION VII - Precautions for safe handling and use

7.1 Steps to be taken in case material is released or spilled : Clean
up spill immediately. Do not touch spilled material. Stop leak if you
can do it without risk. For small spills, take up with sand or other
absorbent material and place into container for disposal. For small dry
spills, with clean shovel place material into clean, dry container and
cover. For larger spills, dike far ahead of spill for later disposal.
Keep unnecessary people away. Isolate hazard area
7.2 Waste disposal methods : Do not incinerate, return to reclamation
centers. Dispose of in accordance with Federal, State and Local
regulations.
7.3 Precautions to be taken in handling and storage : Always keep
mercury stored in a sealed container away from heat.
7.4 Other precautions : Superfund Amendments and Re-authorization Act
(SARA) has established a 1 lb. reportable quantity for spills of this
material.
SECTION VIII - Control Measures

8.1 Respiratory protection : Should be NIOSH-MESA certified. Fire
fighters should wear self-contained breathing apparatus with a full
face piece operating in pressure-demand or other positive pressure
mode.
8.2 Ventilation Provide local exhaust or general dilution ventilation
to meet permissible exposure limits.
8.3 Protective Gloves : Must be worn.
8.4 Eye protection : Safety goggles.
8.5 Other protective clothing or equipment : Wear appropriate
protective clothing to prevent any possibility of skin contact with
this substance.
8.6 Work/Hygienic practices : Observe normal care when working with
chemicals.

Health affects and first aid Inhalation: Acute: Inhalation of a high
concentration of mercury vapor can cause almost immediate dyspnea,
cough, fever, nausea and vomiting, diarrhea, stomatitis, salivation,
metallic taste, gingivitis, and cardiac abnormalities. Respiratory
irritation may occur with chest pain and tightness. Symptoms may re
solve or may progress to necrotizing bronchiolitis, pneumonitis,
pulmonary edema, pneumothorax, interstitial fibrosis, and death.
Acidosis and renal damage may also occur. Allergic reactions that may
occur in previously exposed persons include dermatitis, encephalitis,
and death. Metal fume fever, an influenza-like illness, may occur due
to the inhalation of freshly formed metal oxide particles sized below
1.5 microns and usually between 0.02-0.05 microns. Symptoms may be
delayed 4-12 hours and begin with a sudden onset of thirst, and a
sweet, metallic or foul taste in the mouth. Other symptoms may include
upper respiratory tract irritation accompanied by coughing and a
dryness of the mucous membranes, lassitude and a generalized feeling of
malaise. Fever, chills, muscular pain, mild to severe headache, nausea,
occasional vomiting, exaggerated mental activity, profuse sweating,
excessive urination, diarrhea and prostration may also occur. Tolerance
to fumes develops rapidly, but is quickly lost. All symptoms usually
subside within 24-36 hours.

Inhalation: Chronic: Inhalation of mercury vapor over a long period may
cause mercurialism which is characterized by fine tremors and erethism.
Tremors may affect the hands first, but may also become evident in the
face, arms, and legs. Erethism may be manifested by abnormal shyness,
blushing, self-consciousness, depression or despondency resentment of
criticism, irritability or excitability, headache, fatigue, and
insomnia. In severe cases, hallucinations, loss of memory, and mental
deterioration may occur. Concentrations as low and 0.03 mg/m3 have
induced psychiatric symptoms in humans. Renal involvement may be
indicated by proteinuria, albuminuria, enzymuria, and anuria. Other
effects may include salivation, gingivitis, stomatitis, loosening of
the teeth, blue lines on the gums, diarrhea, chronic pneumonitis and
mild anemia. Repeated exposure to mercury and its compounds may result
in sensitization. Intrauterine exposure may result in tremors and
involuntary movements in the infants. Mercury is excreted in breast
milk. Paternal reproductive effects and effects on fertility have been
reported in male rats following repeated inhalation exposures. First
Aid: Remove from exposure area to fresh air immediately. If breathing
has stopped, give artificial respiration. Maintain airway and blood
pressure and administer oxygen if available. Keep affected person warm
and at rest. Treat symptomatically and supportively. Administration of
oxygen should be performed by qualified personnel. Get medical
attention immediately.

Skin contact: Acute: Direct contact with liquid may cause irritation
and redness. Small amounts of mercury may be absorbed through intact
skin. Allergic reactions that may occur in previously exposed persons
include dermatitis, encephalitis, and death. Subcutaneous introcuction,
from handling broken thermometers, may result in local inflammation,
granulomatous skin reactions, and slight signs of mercury poisoning
including digestive disorders, metallic taste in the mouth, and
neuropsychic disorders. Skin contact: Chronic: prolonged or repeated
exposure may result in dermal sensitization and systemic effects as
detailed in chronic inhalation exposure. Skin contact: First aid:
Remove contaminated clothing and shoes immediately. Wash affected area
with soap or mild detergent and large amounts of water until no
evidence of chemical remains (approximately 15-20 minutes). Get medical
attention immediately. Eye contact: Acute: Direct contact with liquid
may cause irritation and redness. Animal studies indicate diffusion and
absorption of mercury into the tissues of the eye may occur. No
clinical signs of conjunctivitis or inflammation occurred.

Eye contact: Chronic: Mercury exposure from inhalation ingestion, or
skin contact may be indicated by mercurialentis, discoloration of the
crystalline lens, on slit lamp examination of the eye. First aid: wash
eyes immediately with large amounts of water or normal saline,
occasionally lifting upper and lower lids, until no evidence of
chemical remains (approximately 15-20 minutes). Get medical attention
immediately.

Ingestion: May cause burning of the mouth and throat, thirst, nausea
and vomiting. Metallic mercury is not usually absorbed sufficiently
from the gastrointestinal tract to induce an acute toxic response.
Rarely, a large single dose may result in sign and symptoms of chronic
inhalation is sufficient amount of mercury are retained in the body.
Chronic: Repeated ingestion of small amount of mercury may result in
the absorption of sufficient amounts to product toxic effects as
detailed in chronic inhalation exposure. First Aid: Remove by gastric
lavage or emesis. Maintain blood pressure and airway. Give oxygen if
respiration is depressed.. Do not perform gastric lavage or emesis if
victim is unconscious. Get medical attention immediately (Dreisbach,
Handbook of Poisoning, 11th ed.). Administration of gastric lavage or
oxygen should be performed by qualified medical personnel. Antidote:
The following antidote had been recommended. However, the decision as
to whether the severity of poisoning requires administration of any
antidote and actual dose required should be made by qualified medical
personnel. Mercury poisoning: Give dimercaprol, 3mg/kg (or 0.3 ml/10kg)
every 4 hours for the first 2 days and then 2mg/kg every 12 hours for a
total of 10 days if necessary. Dimercaprol is available as a 10%
solution in oil for intra muscular administration. Hemodialysis will
speed the removal of the mercury-dimercaprol complex. Penicallamine is
also effective. Give up to 100 mg/kg/day (maximum 1 gr/day) divided
into 4 doses for no longer than 1 week. If a longer administration
period is warranted, dosage should not exceed 40/mg/kg/day. Give the
drug orally half an hour before meals. A chelating agent should be
continued until the urine-mercury level falls below 50µg/24 hours
(Dreisbach, Handbook of Poisoning, 12th ed.). Incompatibility with
Acetylene, acetylinic compounds, aluminum, amines, ammonia+moisture,
boron diiodphosphide, bromine, 3-bromopropyne, calcium, chlorine,
chlorine dioxide, copper and alloys, ethylene oxide + traces of
acetylene, lithium, methyl azide, methylsilane + oxygen, nitric acid +
alcohols, oxalic acid, oxidants, peroxyformic acid, rubidium, silver
perchlorate + 3-hexyne, silver perchlorate + 2-pentyne, sodium, sodium
carbide, sulphuric acid (hot), tetracarbonylnickel+ oxygen.

560898 (R-5/97)

Published in 1997 by Dentsply International

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