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MSDS 
:
 Zinc, 5% suspension in THF, highly active rieke?? metal
CAS 
:
 109-99-9
SYNONYMS 
:
 Rieke?? Zinc
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 109-99-9 |Tetrahydrofuran | 95 | 203-726-8 |
|----------------|--------------------------------------|----------|-----------|
| 7440-66-6 |Zinc | 5 | 231-175-3 |
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
Hazard Symbols: XI F
Risk Phrases: 11 19 36/37

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Highly flammable. May form explosive peroxides. Irritating to eyes
and respiratory system.Hygroscopic (absorbs moisture from the air).

Potential Health Effects
Eye:
Contact with eyes may cause severe irritation, and possible eye
burns. Vapors may cause eye irritation.
Skin:
Causes skin irritation. May be absorbed through the skin. If
absorbed, causes symptoms similar to those of inhalation.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and
diarrhea. May cause central nervous system depression. May be
harmful if swallowed.
Inhalation:
Inhalation of high concentrations may cause central nervous system
effects characterized by nausea, headache, dizziness, unconsciousness
and coma. Vapors may cause dizziness or suffocation. Inhalation may
cause coughing, difficulty breathing and loss of consciousness.
Causes irritation of the mucous membrane and upper respiratory tract.
Chronic:
Prolonged or repeated eye contact may cause conjunctivitis.
Prolonged or repeated skin contact may cause defatting and
dermatitis. May cause liver and kidney damage. May cause lung damage.
Narcotic in high concentrations.

**** SECTION 4 - FIRST AID MEASURES ****

Eyes:
In case of contact, immediately flush eyes with plenty of water for
at least 15 minutes. Get medical aid immediately.
Skin:
In case of contact, flush skin with plenty of water. Remove
contaminated clothing and shoes. Get medical aid if irritation
develops and persists. Wash clothing before reuse.
Ingestion:
If swallowed, do not induce vomiting unless directed to do so by
medical personnel. Never give anything by mouth to an unconscious
person. Get medical aid.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial
respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively. Persons with skin problems
or liver, kidney, lung, or blood diseases may be at increased risk
from exposure to this substance.

**** SECTION 5 - FIRE FIGHTING MEASURES ****

General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. Use water spray to keep fire-exposed containers
cool. Forms peroxides of unknown stability. Extremely flammable
liquid and vapor. Vapor may cause flash fire. Vapors are heavier than
air and may travel to a source of ignition and flash back. Vapors can
spread along the ground and collect in low or confined areas.
Extinguishing Media:
Water may be ineffective. In case of fire, use carbon dioxide, dry
chemical powder or appropriate foam.

**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth),
then place in suitable container. Use water spray to dilute spill to
a non-flammable mixture. Avoid runoff into storm sewers and ditches
which lead to waterways. Remove all sources of ignition. Use a
spark-proof tool. Isolate area and deny entry. Provide ventilation.
A vapor suppressing foam may be used to reduce vapors.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Ground and bond containers when transferring
material. Empty containers retain product residue, (liquid and/or
vapor), and can be dangerous. Take precautionary measures against
static discharges. Keep container tightly closed. Do not pressurize,
cut, weld, braze, solder, drill, grind, or expose empty containers
to heat, sparks or open flames. Use only with adequate ventilation.
Keep away from heat, sparks and flame. Avoid breathing vapor or mist.
Do not get in eyes. Avoid contact with skin and clothing.
Storage:
Keep away from heat, sparks, and flame. Store in a cool place in the
original container and protect from sunlight. Keep under a nitrogen
blanket. Keep from contact with oxidizing materials. Flammables-area.
Regularly check inhibitor levels to maintain peroxide levels below
1%. Store protected from moisture. Containers should be dated when
opened and tested periodically for the presence of peroxides. Should
crystals form in a peroxidizable liquid, peroxidation may have
occurred and the product should be considered extremely dangerous. In
this instance, the container should only be opened remotely by
professionals. All peroxidizable substances should be stored away
from heat and light and be protected from ignition sources.

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Use explosion-proof ventilation equipment. Facilities storing or
utilizing this material should be equipped with an eyewash facility
and a safety shower. Use adequate general or local exhaust
ventilation to keep airborne concentrations below the permissible
exposure limits.
Exposure Limits
CAS# 109-99-9:
United Kingdom, WEL - TWA: 50 ppm TWA; 150 mg/m3 TWA
United Kingdom, WEL - STEL: 100 ppm STEL; 300 mg/m3 STEL
United States OSHA: 200 ppm TWA; 590 mg/m3 TWA
Belgium - TWA: 200 ppm VLE; 599 mg/m3 VLE
Belgium - STEL: 100 ppm VLE; 300 mg/m3 VLE
France - VME: 200 ppm VME; 590 mg/m3 VME
Germany: 50 ppm TWA; 150 mg/m3 TWA
Germany: Skin absorber
Japan: 200 ppm OEL; 590 mg/m3 OEL
Malaysia: 200 ppm TWA; 590 mg/m3 TWA
Netherlands: 100 ppm MAC; 300 mg/m3 MAC
Russia: 100 mg/m3 TWA
Spain: 50 ppm VLA-ED; 150 mg/m3 VLA-ED
Spain: 100 ppm VLA-EC; 300 mg/m3 VLA-EC
CAS# 7440-66-6:

Germany: 2 mg/m3 TWA (respirable fraction, smoke, With a working
temperature >850 °C, cas

Personal Protective Equipment

Eyes:
Wear chemical splash goggles.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
A respiratory protection program that meets OSHA's 29
CFR 1910.134 and ANSI Z88.2 requirements or European
Standard EN 149 must be followed whenever workplace
conditions warrant respirator use.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Not available.
Color: Not available.
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: -17 deg C ( 1.40 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density: 0.949
Molecular Formula: Zn
Molecular Weight: 65.38

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Under normal storage conditions, peroxidizable compounds can form
and accumulate peroxides which may explode when subjected to heat or
shock. This material is most hazardous when peroxide levels are
concentrated by distillation or evaporation. THF should never be
distilled to dryness. Prolonged exposure to air, even from extended
storage time, can deplete BHT inhibitor and rapidly accelerate
THF-peroxide formation.
Conditions to Avoid:
Light, ignition sources, moisture, excess heat, evaporating to near
dryness, confined spaces.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong acids, oxygen, bromine, metal
halides, lithium tetrahydroaluminate, borane, sodium aluminum
hydride, sodium tetrahydroaluminate, caustic alkalis.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Will not occur.

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 109-99-9: LU5950000
CAS# 7440-66-6: ZG8600000
LD50/LC50:
CAS# 109-99-9: Inhalation, rat: LC50 = 21000 ppm/3H; Oral, rat: LD50
= 1650 mg/kg.
CAS# 7440-66-6.
Carcinogenicity:
Tetrahydrofuran -
ACGIH: A3 - Confirmed animal carcinogen with unknown relevance to
Zinc -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****

Ecotoxicity:
Fish: Fathead Minnow: LC50 = 2160 mg/L; 96 Hr; Flow through bioassay
(pH 7.5)Water flea Daphnia: EC50 =5930 mg/L; 24 HrTetrahydrofuran is
not expected to adsorb to suspended matter in the water based on its
measured Koc values. This compound should volatilize from water
surfaces. An estimated BCF value of 1 suggests that tetrahydrofuran
will not bioconcentrate in aquatic organisms.

**** SECTION 13 - DISPOSAL CONSIDERATIONS ****

Dispose of in a manner consistent with federal, state, and local regulations.

**** SECTION 14 - TRANSPORT INFORMATION ****

IATA
Shipping Name: TETRAHYDROFURAN, MIXTURE
Hazard Class: 3
UN Number: 2056
Packing Group: II
IMO
Shipping Name: TETRAHYDROFURAN, MIXTURE
Hazard Class: 3
UN Number: 2056
Packing Group: II
RID/ADR
Shipping Name: TETRAHYDROFURAN, MIXTURE
Hazard Class: 3
UN Number: 2056
Packing group: II
USA RQ: CAS# 109-99-9: 1000 lb final RQ; 454 kg final RQ
USA RQ: CAS# 7440-66-6: 1000 lb final RQ (no reporting of releases of this hazar

**** SECTION 15 - REGULATORY INFORMATION ****

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI F
Risk Phrases:
R 11 Highly flammable.
R 19 May form explosive peroxides.
R 36/37 Irritating to eyes and respiratory system.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
S 29 Do not empty into drains.
S 33 Take precautionary measures against static
discharges.
WGK (Water Danger/Protection)
CAS# 109-99-9: 1
CAS# 7440-66-6: 0
Canada
CAS# 109-99-9 is listed on Canada's DSL List.
CAS# 7440-66-6 is listed on Canada's DSL List.
CAS# 109-99-9 is listed on Canada's Ingredient Disclosure List.
CAS# 7440-66-6 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 109-99-9 is listed on the TSCA inventory.
CAS# 7440-66-6 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

Text for R-phrases from Section 2
R 11 Highly flammable.
R 19 May form explosive peroxides.
R 36/37 Irritating to eyes and respiratory system.
MSDS Creation Date: 6/10/2003 Revision #2 Date: 4/21/2004

The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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