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AMMONIUM MOLYBDATE
1. Product Identification
Synonyms: Molybdic acid hexammonium salt tetrahydrate; ammonium
molybdate tetrahydrate;ammonium heptamolybdate, tetrahydrate
CAS No.: 12027-67-7 (Anhydrous); 12054-85-2 (Tetrahydrate)
Molecular Weight: 1235.86
Chemical Formula: (NH4)6Mo7O24.4H2O
Product Codes:
J.T. Baker: 0716
Mallinckrodt: 3420
2. Composition/Information on Ingredients
Ingredient CAS No Percent Hazardous
--------------------------------------- ------------ ------------ ---------
Hexaammonium Molybdate 12027-67-7 100% Yes
3. Hazards Identification
Emergency Overview
--------------------------
WARNING! HARMFUL IF SWALLOWED OR INHALED. CAUSES IRRITATION TO SKIN, EYES
AND RESPIRATORY TRACT. AFFECTS KIDNEYS AND BLOOD.
SAF-T-DATA(tm) Ratings (Provided here for your
convenience)
-----------------------------------------------------------------------------------------------------------
Health Rating: 2 - Moderate (Life)
Flammability Rating: 0 - None
Reactivity Rating: 1 - Slight
Contact Rating: 2 - Moderate
Lab Protective Equip: GOGGLES; LAB COAT; VENT HOOD; PROPER GLOVES
Storage Color Code: Green (General Storage)
-----------------------------------------------------------------------------------------------------------
Potential Health Effects
----------------------------------
Inhalation:
Irritant for the upper respiratory system. Pungent taste in mouth and
throat, coughing, labored breathing. Can be a route of absorption by the
body with symptoms like ingestion.
Ingestion:
Irritant to the digestive system. Symptoms of sore throat, abdominal pain,
nausea may occur. May cause anemia,gout, headaches, weight loss, joint pain,
and liver or kidney damage.
Skin Contact:
Causes irritation to skin. Symptoms include redness, itching, and pain.
Eye Contact:
Causes irritation, redness, and pain.
Chronic Exposure:
Prolonged or repeated exposure to this product may cause symptoms similar to
ingestion.
Aggravation of Pre-existing Conditions:
Persons with pre-existing skin disorders, blood disorders or eye problems,
or impaired liver, kidney or respiratory function may be more susceptible to
the effects of the substance.
4. First Aid Measures
Inhalation:
Remove to fresh air. If not breathing, give artificial respiration. If
breathing is difficult, give oxygen. Get medical attention.
Ingestion:
Induce vomiting immediately as directed by medical personnel. Never give
anything by mouth to an unconscious person. Get medical attention.
Skin Contact:
Immediately flush skin with plenty of water for at least 15 minutes. Remove
contaminated clothing and shoes. Get medical attention. Wash clothing before
reuse. Thoroughly clean shoes before reuse.
Eye Contact:
Immediately flush eyes with plenty of water for at least 15 minutes, lifting
lower and upper eyelids occasionally. Get medical attention immediately.
5. Fire Fighting Measures
Fire:
Not considered to be a fire hazard.
Explosion:
Not considered to be an explosion hazard.
Fire Extinguishing Media:
Use any means suitable for extinguishing surrounding fire.
Special Information:
In the event of a fire, wear full protective clothing and NIOSH-approved
self-contained breathing apparatus with full facepiece operated in the
pressure demand or other positive pressure mode. Water spray may be used to
keep fire exposed containers cool.
6. Accidental Release Measures
Ventilate area of leak or spill. Wear appropriate personal protective
equipment as specified in Section 8. Spills: Pick up and place in a suitable
container for reclamation or disposal, using a method that does not generate
dust.
7. Handling and Storage
Keep in a tightly closed container. Protect from physical damage. Store in a
cool, dry, ventilated area away from sources of heat, moisture and
incompatibilities. Containers of this material may be hazardous when empty
since they retain product residues (dust, solids); observe all warnings and
precautions listed for the product.
8. Exposure Controls/Personal Protection
Airborne Exposure Limits:
-OSHA Permissible Exposure Limit (PEL):
5 mg/m3 for soluble molybdenum compounds as Mo
15 mg/m3 for insoluble molybdenum compounds as Mo
-ACGIH Threshold Limit Value (TLV):
Molybdenum, metal and insoluble compounds, inhalable fraction, as Mo: 10
mg/m3
Molybdenum, metal and insoluble compounds, respirable fraction, as Mo: 3
mg/m3
Molybdenum, soluble compounds, respirable fraction, as Mo: 0.5 mg/m3, A3 -
Confirmed animal carcinogen with unknown relevance to humans
Ventilation System:
A system of local and/or general exhaust is recommended to keep employee
exposures below the Airborne Exposure Limits. Local exhaust ventilation is
generally preferred because it can control the emissions of the contaminant
at its source, preventing dispersion of it into the general work area.
Please refer to the ACGIH document, Industrial Ventilation, A Manual of
Recommended Practices, most recent edition, for details.
Personal Respirators (NIOSH Approved):
If the exposure limit is exceeded and engineering controls are not feasible,
a half facepiece particulate respirator (NIOSH type N95 or better filters)
may be worn for up to ten times the exposure limit or the maximum use
concentration specified by the appropriate regulatory agency or respirator
supplier, whichever is lowest.. A full-face piece particulate respirator
(NIOSH type N100 filters) may be worn up to 50 times the exposure limit, or
the maximum use concentration specified by the appropriate regulatory
agency, or respirator supplier, whichever is lowest. If oil particles (e.g.
lubricants, cutting fluids, glycerine, etc.) are present, use a NIOSH type R
or P filter. For emergencies or instances where the exposure levels are not
known, use a full-facepiece positive-pressure, air-supplied respirator.
WARNING: Air-purifying respirators do not protect workers in
oxygen-deficient atmospheres.
Skin Protection:
Wear impervious protective clothing, including boots, gloves, lab coat,
apron or coveralls, as appropriate, to prevent skin contact.
Eye Protection:
Use chemical safety goggles and/or full face shield where dusting or
splashing of solutions is possible. Maintain eye wash fountain and
quick-drench facilities in work area.
9. Physical and Chemical Properties
Appearance:
White to yellow-green crystals
Odor:
Odorless.
Solubility:
43 g / 100 cc cold water.
Density:
2.498
pH:
5.0 - 5.5
% Volatiles by volume @ 21C (70F):
0
Boiling Point:
190C (374F) Decomposes.
Melting Point:
90C (194F) Loses 1 water @ this temperature.
Vapor Density (Air=1):
No information found.
Vapor Pressure (mm Hg):
No information found.
Evaporation Rate (BuAc=1):
No information found.
10. Stability and Reactivity
Stability:
Stable under ordinary conditions of use and storage.
Hazardous Decomposition Products:
Burning may produce ammonia, nitrogen oxides and metal fumes.
Hazardous Polymerization:
Will not occur.
Incompatibilities:
Alkali metals
Conditions to Avoid:
Incompatibles.
11. Toxicological Information
Anhydrous: Oral rat LD50: 333 mg/kg. Investigated as a mutagen.
--------\Cancer Lists\------------------------------------------------------
---NTP Carcinogen---
Ingredient Known Anticipated IARC Category
------------------------------------ ----- ----------- -------------
Hexaammonium Molybdate (12027-67-7) No No None
12. Ecological Information
Environmental Fate:
No information found.
Environmental Toxicity:
No information found.
13. Disposal Considerations
Whatever cannot be saved for recovery or recycling should be managed in an
appropriate and approved waste disposal facility. Processing, use or
contamination of this product may change the waste management options. State
and local disposal regulations may differ from federal disposal regulations.
Dispose of container and unused contents in accordance with federal, state
and local requirements.
14. Transport Information
Not regulated.
15. Regulatory Information
--------\Chemical Inventory Status - Part 1\---------------------------------
Ingredient TSCA EC Japan Australia
----------------------------------------------- ---- --- ----- ---------
Hexaammonium Molybdate (12027-67-7) Yes Yes Yes Yes
--------\Chemical Inventory Status - Part 2\---------------------------------
--Canada--
Ingredient Korea DSL NDSL Phil.
----------------------------------------------- ----- --- ---- -----
Hexaammonium Molybdate (12027-67-7) Yes Yes No Yes
--------\Federal, State & International Regulations - Part 1\----------------
-SARA 302- ------SARA 313------
Ingredient RQ TPQ List Chemical Catg.
----------------------------------------- --- ----- ---- --------------
Hexaammonium Molybdate (12027-67-7) No No No No
--------\Federal, State & International Regulations - Part 2\----------------
-RCRA- -TSCA-
Ingredient CERCLA 261.33 8(d)
----------------------------------------- ------ ------ ------
Hexaammonium Molybdate (12027-67-7) No No No
Chemical Weapons Convention: No TSCA 12(b): No CDTA: No
SARA 311/312: Acute: Yes Chronic: Yes Fire: No Pressure: No
Reactivity: No (Pure / Solid)
Australian Hazchem Code: None allocated.
Poison Schedule: None allocated.
WHMIS:
This MSDS has been prepared according to the hazard criteria of the
Controlled Products Regulations (CPR) and the MSDS contains all of the
information required by the CPR.
16. Other Information
NFPA Ratings: Health: 2 Flammability: 0 Reactivity:
0
Label Hazard Warning:
WARNING! HARMFUL IF SWALLOWED OR INHALED. CAUSES IRRITATION TO SKIN, EYES
AND RESPIRATORY TRACT. AFFECTS KIDNEYS AND BLOOD.
Label Precautions:
Avoid contact with eyes, skin and clothing.
Avoid breathing dust.
Keep container closed.
Use only with adequate ventilation.
Wash thoroughly after handling.
Label First Aid:
If swallowed, induce vomiting immediately as directed by medical personnel.
Never give anything by mouth to an unconscious person. In case of contact,
immediately flush eyes or skin with plenty of water for at least 15 minutes.
Remove contaminated clothing and shoes. Wash clothing before reuse. If
inhaled, remove to fresh air. If not breathing, give artificial respiration.
If breathing is difficult, give oxygen. In all cases, get medical attention.
Product Use:
Laboratory Reagent.
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