NILE
CHEMICALS
Synonyms: Ammonium Molybdate
CAS No.: 12027-67-7 (Anhydrous); 12054-85-2 (Tetrahydrate) 
Molecular Weight: 1235.86 
Chemical Formula: (NH4)6Mo7O24.4H2O 
Product Codes: 11161
Ingredient CAS No Percent Hazardous
--------------------------------------- ------------ ------------
Hexaammonium Molybdate 12027-67-7 100% Yes
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.
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. 
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. 
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.
 
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.
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. 
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. 
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. 
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
Environmental Fate: No information found. 
Environmental Toxicity: No information found. 
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.
Not regulated.
--------\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
 Nile Chemicals. provides the 
information contained herein in good faith but makes no representation as to its 
comprehensiveness or accuracy. This document is intended only as a guide to the 
appropriate precautionary handling of the material by a properly trained person 
using this product. Individuals receiving the information must exercise their 
independent judgment in determining its appropriateness for a particular 
purpose. NILE CHEMICALS. MAKES NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS 
OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF MERCHANTABILITY, 
FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE INFORMATION SET FORTH 
HEREIN OR THE PRODUCT TO WHICH THE INFORMATION REFERS. ACCORDINGLY, NILE 
CHEMICALS. WILL NOT BE RESPONSIBLE FOR DAMAGES RESULTING FROM USE OF OR RELIANCE 
UPON THIS INFORMATION. 
 
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