Section
II
PERSONAL PROTECTION INFORMATION
Respiratory Protection: A NIOSH approved cartridge respirator
with full-face shield. Chemical cartridge should provide protection
against acid fumes (Hydrogen Fluoride). For concentrations greater than
20ppm, a NIOSH approved self-contained breathing apparatus with
full-face shield should be used.
Eye and Face Protection: Use tight-fitting chemical splash
goggles and a full-face shield, 8 inch minimum. Contact lenses should
not be worn.
Hand, Arm and Body Protection: Prevent contact with skin by use
of acid-proof clothing, gloves and shoes. Use a NIOSH approved acid
proof suit and boots where liquid or high vapor concentration is
possible.
Other Protective Clothing and Equipment: Eye wash and emergency
shower facilities should be available in handling area.
Engineering Controls: General or local exhaust systems sufficient
to maintain vapors below
2.5 mg/m
3 (as F).
Section
III
HEALTH INFORMATION
OSHA Permissible Exposure Limit (PEL): 2.5mg/m
3(as F)
ACGIH Threshold Limit Value (TLV): 2.5mg/m
3(as F)
Listing in the following:
Department of Transportation Hazardous Material Regulations (49CFR)
Massachusetts Hazardous Substance List
toxic Substances Control Act Inventory of toxic Substances (TSCA)
OSHA Health Hazard Classification: Corrosive
Primary Route(s) of Entry: Eye and skin contact, inhalation
Symptoms of Exposure:
Acute: Liquid or vapors can cause severe irritation and burns
which may not be apparent for hours. Can cause severe irritation to the
lungs, nose and throat if swallowed, can cause severe damage to throat
and stomach.
Chronic: Prolonged exposure could result in bone changes,
corrosive effect on mucous membranes including ulceration of nose,
throat and bronchial tubes, cough, shock, pulmonary edema, Fluorosis,
coma and death.
Aggravated Medical Condition: Any skin condition and/or
pre-existing respiratory disease including asthma and emphysema.
Toxic Data: LD
50200 mg/kg (Oral - Guinea Pig)
Section
IV
EMERGENCY AND FIRST AID PROCEDURES
Inhalation: Remove exposed person to an uncontaminated area
immediately. If breathing has stopped, start artificial respiration at
once. Oxygen should be provided for an exposed person having difficulty
breathing (but only by an authorized person) until exposed person is
able to breathe easily by themselves. Exposed person should be examined
by a physician.
Eye Contact: Flush eyes for at least 15 minutes with large
amounts of water. Eyelids should be held apart during the flushing to
insure contact of water with all accessible tissue of the eyes and lids.
Medical attention should be given as soon as possible.
Skin Contact: Exposed person should be removed to an
uncontaminated area and subjected immediately to a drenching shower of
water for a minimum of 15 to 20 minutes. Remove all contaminated
clothing while under shower. Medical attention should be given as soon
as possible for all burns, regardless of how minor they seem.
Ingestion: If conscious, give the exposed person large quantities
of water immediately to dilute the acid. Do
NOT induce vomiting.
Milk may be given for its soothing effect. A physician should be
contacted immediately.
Note to Physician: Beware of late onset of pulmonary edema for up
to 48 hours. Treat severe burns similar to Hydrofluoric Acid exposure.
Section
V
INGREDIENTS
| Composition |
|
|
|
|
Percentage |
| H2SiF6 |
|
|
|
|
25.0 +/- 2% |
| H2O |
|
|
|
|
75.0 +/- 2% |
Section
VI
PHYSICAL DATA
| Boiling Point: 222°F (105°C) |
Freezing Point: 4°F(-15.5°C) |
| Specific Gravity(H2O=1):
1.234 @ 25% |
Vapor Pressure(mm Hg): 24 @ 77° F |
| Percent Volatile by Volume: N/A |
Vapor Density (Air=1): N/A |
| Solubility in Water: Complete |
Evaporation Rate: N/A |
| Physical State: Fuming Liquid |
Molecular Weight: 144.08 |
| Bulk Density: 10.29 lbs/gal @ 25% |
pH (1% Solution): 1.2 |
Appearance and Odor: Water white to straw yellow,burning
liquid,with pungent odor
Section
VII
REACTIVITY
Stability: Stable.
Hazardous Polymerization: Will not occur.
Conditions and Materials to Avoid: Metal, glass, stoneware,
alkali and strong concentrated acids.
Hazardous Decomposition Products: When heated to decomposition
(222°F) it emits highly toxic and corrosive fumes of Hydrogen Fluoride,
Silicon Tetra-fluoride and Hydrogen Gas.
Section
VIII
FIRE AND EXPLOSION HAZARDS
Flash Point and Method Used: N/A
Flammable Limits - % Volume in Air: Lower N/A
Upper N/A
Extinguishing Media: Use agent which is appropriate for
surrounding fire.
Special Fire Fighting Procedures and Precautions: Wear NIOSH
approved self-contained acid suits.
Auto Ignition Temperature: N/A
Unusual Fire and Explosion Hazards: Reacts with many metals to
produce flammable and explosive hydrogen gas. Keep container cool with
water, using fog nozzles, as decomposition will occur above
222°F and produce toxic and corrosive fumes of fluoride.
Section
IX
STORAGE AND SPECIAL PRECAUTIONS
Handling and Storing Precautions: Store in containers in cool,
dry, well ventilated area away from sources of heat or ignition. Do
NOT store in glass or stoneware. Use non-sparking tools. Keep
separate from alkali metals, oxidizing agent, combustible solids and
organic peroxides.
Ventilation: Provide adequate general and/or local exhaust to
maintain vapors below 2.5 mg/m
3 (as
F).
Other Precautions: Do not inhale fumes and prevent skin contact.
If pungent, irritating odor can be detected, workers are being
over-exposed. Eye wash and safety shower should be available in all acid
handling areas.
Section
X
TRANSPORTATION REQUIREMENTS
| DOT Proper Shipping Name: Fluorosilicic Acid |
Packing Group: II |
| DOT Hazard Class: 8 (Corrosive) |
Subsidiary Hazard Class: N/A |
| Identification Number: UN 1778 |
Placarding Requirement: Corrosive |
| EPA Hazardous Substance: No |
Reportable Quantity: N/A |
RCRA Status of Unused Material if Discarded: Not Listed
Waste Disposal Method: Disposer must comply with federal, state
and local disposal or discharge laws.
Additional Comments: For International transportation,
Fluorosilicic Acid is regulated by the International Maritime
Organization (IMO) and the International Air Transport Association
(IATA) for vessel and air movement as a Class 8. Packaging, marking,
labelling and shipping paper descriptions must precisely reflect the
regulation for export movement.
Section
XI
EMERGENCY ACTION - SPILL OR LEAK
Emergency Action: Keep unnecessary people away. Stay upwind, keep
out of low areas. Isolate hazard area and deny entry. We recommend that
the user establish a spill prevention, control and countermeasure plan.
This plan should include procedures for proper storage as well as
containment and clean-up of spills and leaks. The procedures should
conform to safe practices and provide for proper recovery and disposal
in accordance with federal, state and local regulation. Contact Chemtrec
at 1-800-424-9300 for 24-hour emergency assistance.
Small Spills: Any personnel in area should wear a NIOSH approved
air supplied acid suit. Dike area to contain material. Do not allow
solution to enter sewers or surface water. Neutralize the spill with
water and lime (hydrated lime). Take up with sand or non-combustible
absorbent material and place in containers for later disposal. Provide
ventilation and be wary of hydrogen generation upon reaction with some
metals. Contact Chemtrec at 1-800-424-9300 for 24-hour emergency
assistance.
Large Spills: Contact Chemtrec at 1-800-424-9300 for 24-hour
emergency assistance. Any personnel in area should wear a NIOSH approved
air supplied acid suit. Dike area ahead of spill to contain material. Do
not allow solution to enter sewers or surface water. Neutralize the
spill with water and lime (hydrated lime). Provide ventilation and be
wary of hydrogen generation upon reaction with some metals. Notify the
National Response Center, if required.
DISCLAIMER
The information presented herein is based on data considered to be
accurate and that reflects the requirements of the OSHA Hazard
Communication Standards in effect as of the date of preparation of this
Material Safety Data Sheet. However, no warranty or representation,
express or implied, is made as to the accuracy or completeness of the
foregoing data and safety information. In addition, no responsibility
can be assumed by vendor for any damage or injury resulting from
abnormal use, from any failure to adhere to recommended practices, or
from any hazards inherent in the nature of the product.
