SPI Supplies Division|
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Date Effective:
January 13, 2009
(most recent revision)
Chemical Name/Synonyms:
Mixture
Chemical family:
Silver colloid in carrier with polymer
Emergencies
Use Only #'s:
Contacting CHEMTREC 24 Hour Emergency
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Worldwide FAX : 1-(703)-741-6090
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Product or Trade Name.... SPI #05063-AB Silver Paste Plus
CAS #.................... Mixture, see below for
individual components
Chemical Formula......... Mixture
Main use................. Mounting of samples for scanning electron
microscopy; mounting of silicon wafers when
producing high temperature thin film
superconductor materials.
Secondary use............ PC board repairs and other electronic
industry applications.
Carcinogenicity:
CAS # Chemical Name V.P. mm Hg@20°C Weight%
108-65-6 1-methoxy-2-propanol acetate 3.7 10-30
7440-22-4 silver, metallic > 60
65859-05-4 Acrylic resin 5-10
Proprietary ingredients(s) 0.1-1
Instability:
The product is normally stable.
Incompatibility:
Avoid contact with oxidizing agents, acetylene, ammonia, hydrogen peroxide,
chlorine trifluoride, nitric acid, ethanol, strong bases, strong acids,
strong oxidizing agents, ethylenimine, oxalic acid, tartaric acid,
bromoazide.
Decomposition:
Decomposition products: Carbon dioxide, metal fumes, metal oxides,
carbon monoxide, ethyl methacrylate, water,
methyl acrylate
Polymerization:
This product does not normally polymerize significantly.
Flashpoint: 50.5°C (123 °F) Closed Cup
53.3°C (128 °F) Seta Closed Cup
Fire and Explosion Hazards:
Keep away from sparks and open flames! Do not smoke in area with
open product; if there is a chance of the product being heated above its
flashpoint during processing, remove all sources of ignition such as open
sparks, flames or static discharge to prevent vapor ignition.
Extinguishing Media:
Water spray, dry chemical, or carbon dioxide.
Special Firefighting Information:
Toxic decomposition products may form under fire conditions
(See decomposition section). Wear full protective clothing and
a full facepiece, positive pressure, self-contained breathing
apparatus (SCBA); Decontaminate contaminated clothing and equipment
with soap and water. Dispose of residues per federal, state, and
local regulation (See waste disposal section).
Overview:
The most likely route of overexposure to components of this product is
inhalation. During room temperature use, such as dispensing and screen
printing, or even application to specimens being prepared for SEM
examination, volatile solvents and organics will start evaporating.
During drying (some might say "curing", but which is a technically
incorrect description) at 100-150 °C (212 - 302 °F), most of the volatile
solvents and organics will evaporate. Some low volatility organics will
start to evaporate. During firing, 600-900°C, all remaining organics will
burn off. Small quantities of nonrefractory metals and metal oxides, such
as lead or cadmium, if present in the product may vaporize to rapidly
recondense outside the high temperature regions of the furnace. Laser
trimming resistors can also volatilize small amounts of metals and metal
oxides. Personal performing maintenance/repairs on furnaces, filters or
ducts may need respirators for protection from accumulated respirable
metal oxides. Overexposure to other chemicals used in the operation
should be considered also, such as cleaning solvents used in screen
printing and dispensing. Well designed area and personal air sampling and
analysis can show if exposures are within established limits. Well
designed local ventilation and process enclosures, such as for ovens,
furnaces, lasers, and screen printers, are effective ways to limit employee
exposure where needed.
In addition to meeting exposure limits, it is always prudent to use all
practical means to limit employee exposure to all chemicals. A significant
difference in overall exposure can be made by practical measures such as:
Inhalation: Minimizing by keeping the tubes and/or tins of this
product and solvent and waste disposal containers of
solvent damp wipes tightly closed.
Skin: Avoiding contact by using proper gloves
Ingestion: Avoiding by washing hands before eating, drinking or
smoking, and restricting these activities to outside
the work area.
Eyes: Avoiding contact by wearing chemical splash goggles where
there is a splash potential.
1-methoxy-2-propanol acetate
Toxic effects described in animals include:
Skin or eye contact: Mold skin irritation, eye irritation.
Toxic effects of repeated or prolonged animal exposures include:
By skin or eye contact: Skin effects
By inhalation: Respiratory effects; degeneration of the olfactory
epithelium; renal effects; disturbed equilibrium;
nonspecific effects, that is, weight loss and irritation;
Liver effects;
Additional animal tests have shown no genetic damage in bacterial or
mammalian cell cultures, no developmental toxicity
Human health effects of overexposure may include:
By skin or eye contact: Skin irritation with discomfort or rash; eye
irritation with discomfort, tearing, or blurring
of vision.
By inhalation: Nonspecific discomfort, that is, nausea, headache
or weakness
Human effects of higher level acute, repeated or chronic overexposure
may include:
By inhalation: Irritation of the upper respiratory passages with
coughing and discomfort.
Also: Animal tests indicate commercial grade 1-methoxy-2-propanol
acetate does not cause developmental toxicity. However, tests
of pure 2-methoxy-1-propanol acetate in rabbits and rats by
inhalation have shown developmental toxicity. 2-methoxy-1-propanol
acetate did not show developmental toxicity by skin contact.
2-methoxy-1-propanol acetate is present in commercial grade
1-methoxy-2-propanol acetate in low concentrations.
Fatty Acid Derivative:
No information
Silver (Metallic):
Additional animal studies have shown:
Genetic damage in mammalian cell cultures; no genetic damage in bacterial
cell cultures; no animal test reports are available to define carcinogenic,
developmental, or reproductive hazards.
Human health effects of overexposure may include:
By skin contact: May cause irritation
By eye contact: May cause irritation; photophobia
By inhalation or contact: Argyria, a blue-gray discoloration of the skin,
mucous membranes, inner surface of the eyelids,
cornea, or lens.
Human effects of higher level acute, repeated or chronic overexposure
may include:
By inhalation or contact: Argyria
In addition: There is no effective treatment for argyria. Cases of
argyria have not resulted from exposure to silver concentrations in air
of less than 0.01 mg/m3.
Acrylic resin:
Toxic effects described in animals include:
Slight skin irritation; slight eye irritation.
Human health effects of overexposure may include:
Nonspecific discomfort, e.g. nausea, headache, or weakness; eye irritation
with discomfort, tearing or blurring of vision; irritation of the upper
respiratory passages; allergic skin rashes; dizziness.
Proprietary ingredients:
Human health effects of overexposure may include:
By skin contact: May irritate skin
By eye contact: Eye irritation with discomfort, tearing, or blurring of
vision.
By inhalation: Irritation of the upper respiratory passages.
Individuals may have increased susceptibility to the hazards of overexposure
to ingredient(s) of this product if they have pre-existing diseases of the
skin, central nervous system, eyes, spleen, lungs, liver, and kidneys.
Animal Data:
1-Methoxy-2-Propanol Acetate
Skin absorption LD50: 5,000 mg/kg in rabbits
Oral LD50: 8,532 mg/kg in female rats
Silver (metallic)
Oral LD50 (mice): > 5 g/kg 5000mg/kg
Acrylic resin
Inhalation 1 hour LC50: 2 mg/L in rats
Skin absorption LD50: >3000 mg/kg in rabbits
Oral LD50: > 5000 mg/kg in rats
Carcinogenicity listing:
No ingredients of this product are designated by IARC, NTP, OSHA, ACGIH
as potential carcinogens.
Exposure limits:
Work place exposures should be kept below the following limits:
AIHA ACGIH OSHA
8 hr 15 min 8 hr 15 min 8 hr 15 min
Name/Units
Methyl acrylate/ppm --- 2(skin) 10(skin)
Metallic silver/mg/m3 --- 0.1 0.01
Particulates, N.O.S.,
Propylene glycol monomethyl
ether acetate/mg/m3 100
Notes on exposure limits:
PELs: OSHA Permissible Exposure Limits - 29 CFR 1910.1000, Subpart Z, or
specific substance standards.
TLVs - ACGIH Threshold Limit Values -
published by American Conference of Governmental Industrial Hygienists,
6500 Glenway Avenue, Cincinnati, OH 45211 USA
WEELs - AIHA Workplace Environmental Exposure Limits -
published by the American Industrial Hygiene Association,
2700 Prosperity Avenue, Suite 250, Fairfax, VA 22031
Skin Contact: Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Call a physician. Wash contaminated clothing before reuse. Eye Contact: Immediately flush eyes with plenty of water for at least 15 minutes. Call a physician. Inhalation: If inhaled, remove to fresh air immediately. If not breathing, give artificial respiration. If breathing if difficult, give oxygen. Call a physician. Ingestion: If swallowed, immediately give two glasses of water and induce vomiting. Never give anything by mouth to an unconscious person. Call a physician immediately.
Adequate local ventilation should be used to keep exposures below
applicable limits. Other engineering controls such as totally enclosed
handling systems are also preferred. Respiratory protection will be
needed if exposures can not be kept below applicable limits by other means.
Respiratory protection:
If respirators are needed to meet applicable limits, a respiratory
protection program up to the level of OSHA Standard 29 CFR 1910.134 is
mandatory. This includes air monitoring, selection, medical approval,
training, fit testing, inspection, maintenance, cleaning, storage, etc.
Selection of a suitable respirator will depend on the properties of the
contaminant(s) and their actual or expected air concentration(s) vs.
applicable limits. Consult ANSI Standard Z88.2 for decision logic to
select appropriate NIOSH/MESA approved respirators.
Respirators with organic vapor cartridges provide adequate protection,
within use limitations, for the following components in this product:
Toluene
Gloves:
Gloves should be used when the possibility of skin contact exists;
the suitability of a particular glove and glove material should be
determined as part of an overall glove program. Considerations may
include chemical breakdown time, permeation rate, abrasion, cut and
puncture resistance, flexibility, duration of contact, etc.
Recommended glove materials:
NBR (nitrile-butadiene rubber), polyethylene or vinyl for very limited
exposure based on reported experiences. Because the product is a
complex mixture and formulated composition, glove testing may be
appropriate as part of the glove selection process.
Other protection practices:
Appropriate eye protection such as chemical splash goggles should be
used if the possibility of eye contact exists; protective outer clothing
should be used where the possibility of body contact exists. Contaminated
work clothing should not be allowed out of the workplace. Do not smoke,
consume or store food or drinks in areas where the product is handled and
stored. After handling the product, wash hands thoroughly before leaving
the work area.
Additional engineering controls, work practices, and training may be
required depending on exposure levels. There are discussed in OSHA
Respiratory Protection Standard (29CFR 1910.134) and OSHA Hazard
Communication Standard (29 CFR 1910.1200).
Do not breath dust. Avoid contact with eyes, skin, or clothing.
Wash thoroughly after handling.
Spill, leak, or release: For small spills: Absorb on rags, sand or other absorbant material. For large spills: Get workers out of the affected area. If flammable liquids or vapors may be present, turn off electrical devices or other sources of sparks or flames. Wear protective equipment. Use supplied-air respiratory protection if vapor concentrations are not known. Contain spill at source by diking or absorbing with sand. Do not allow spill to spread to or intentionally flush to sewer or ground. Wash area thoroughly. Adequately ventilate area; spill residue, cleaning rags and absorbant may be refined to recover the precious metal content. Waste disposal: Components of this product may be considered hazardous; waste product may be refined to recover precious metal content.
Contaminated Items: Empty product containers, contaminated clothing and cleaning materials, etc. should be considered hazardous until decontaminated or properly disposed of. See Waste Disposal Section.
No further information known.
Exotoxicity: Exotoxicity is expected to be low based on the relatively
tiny amounts used in each product put up.
Environmental Fate: No information found in our selected references.
Bioaccumulation: Not expected to occur.
Shipping information:
Shipping name: Flammable Liquid,N.O.S.(1-Methoxy-2-Propanol Acetate)
DOT Hazard Class: Flammable Liquid 3
UN/NA ID: UN-1993
Packing Group: II
Marine Pollutant: Not known
TSCA: All components of this product are listed on the TSCA 8(b)
inventory. If identified components of this product are listed under
the TSCA 12(b) Export Notification Rule, they will be listed below.
TSCA 12(b) Component Listed under TSCA Section
SARA-Title 3, Section 313 Emissions Reporting Information (40 CFR 372)
This product contains a chemical which is listed in Section 313 at or above
de minimus concentrations. The following listed chemicals are present:
CAS Number Description %
7440-22-4 Metallic Silver > 60
California Prop. 65:
Proposition 65 requires manufacturers or distributors of consumer products
into the State of California to provide a warning statement if the product
contains ingredients for which the State has found to cause cancer, birth
defects or other reproductive harm. If this product contains an ingredient
listed by the State of California to cause cancer or reproductive toxicity,
it will be listed below:
Ingredient(s)/CAS# Weight %
Toluene / 108-88-3 < 0.1
This product is a physical mixture. The health effects information about
this product is based on the individual ingredients. The data in this
Materials Safety Data Sheet (MSDS) relates only to the specific product
designated herein and does not relate to its use in combination with any
other material or in any process.
Canadian WHMIS Classification: Class B, Div. 3; D2B
If this product should be used in ways that are outside of the intended applications in scanning electron microscope laboratories, and if it is going to be formulated into some other system, so that it becomes just another component of that other system, read the MSDS sheets for the other components before blending as the resulting mixture may have the hazards of all of its parts. Disclaimer of Liability: Caution! Do not use SPI Supplies products or materials in applications involving implantation within the body; direct or indirect contact with the blood pathway; contact with bone, tissue, tissue fluid, or blood; or prolonged contact with mucous membranes. Products offered by SPI Supplies are not designed or manufactured for use in implantation in the human body or in contact with internal body fluids or tissues. SPI Supplies will not provide to customers making devices for such applications any notice, certification, or information necessary for such medical device use required by US FDA (Food and Drug Administration) regulation or any other statute. SPI Supplies and Structure Probe, Inc. make no representation, promise, express warranty or implied warranty concerning the suitability of these materials for use in implantation in the human body or in contact with internal body tissues of fluids.********************************************************************** The information and recommendations set forth above are taken from sources believed to be accurate as of the date hereof, however SPI Supplies and Structure Probe, Inc. make no warranty with respect to the accuracy of the information or the suitability of the recommendations, and assume no liability to any user thereof. The information contained in this sheet does not constitute a hazard assessment and should not be used in place of the user's own assessment of work place risks as required by other health and safety legislation. Be aware of the Structure Probe, Inc. Copyright Policy. Structure Probe, Inc. grants a nonexclusive license to make unlimited copies of this safety sheet for internal use only. Quite obviously, this information would pertain only to this material when purchased from SPI Supplies as product from other sources, with other ingredients and impurity levels could have substantially different properties.
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