SAFETY DATA SHEET
SDS 0264

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            Section 1 -- PRODUCT AND COMPANY IDENTIFICATION                      
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                                                           HMIS CODES
PRODUCT NAME                                            Health            2
   Steamaster Tablets                                   Flammability      0
                                                        Reactivity        1
PRODUCT CODES                                           PPI               B
   68732
CHEMICAL FAMILY
   Organic/Inorganic
USE
   Boiler Water Treatment
MANUFACTURER'S NAME                          EMERGENCY TELEPHONE NO.
   The RectorSeal Corporation                 Chemtrec 24 Hours
   2601 Spenwick Drive                        (800)424-9300 USA
   Houston, Texas  77055  USA                 (703)527-3887 International
   
DATE OF VALIDATION                           TECHNICAL SERVICE TELEPHONE NO. 
   January 23, 2015                           (800)231-3345 or (713)263-8001
DATE OF PREPARATION                         
   October 8, 2012
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           Section 2 -- HAZARDS IDENTIFICATION
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Emergency Overview
OSHA Hazards
Oxidizer, Carcinogen, Target Organ Effect, Toxic by ingestion, Irritant
Target Organs
Blood, Cardiovascular system., Smooth muscle.
GHS CLASSIFICATION
Oxidizing solids (Category 3)
Acute toxicity, Oral (Category 3)
Eye irritation (Category 2A)
Acute aquatic toxicity (Category 1)
PHYSICAL HAZARDS:  Oxidizer
Potential Health Effects
Inhalation - May be harmful if inhaled. Causes respiratory tract irritation.
Skin - May be harmful if absorbed through skin. Causes skin irritation.
Eyes - Causes eye irritation.
Ingestion - Toxic if swallowed.
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GHS Label elements, including precautionary statements
Pictogram: Oxidizer, Toxic, Environmental Hazard
Signal Word: Danger
Hazard statement(s)
H272 - May intensify fire; oxidiser.
H301 - Toxic if swallowed.
H319 - Causes serious eye irritation.
H400 - Very toxic to aquatic life.
Precautionary statement(s)
P220 - Keep/Store away from clothing/ combustible materials.
P273 - Avoid release to the environment.
P301 + P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/ physician.
P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. 
Remove contact lenses, if present and easy to do. Continue rinsing.
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SUMMARY OF ACUTE HAZARDS
   Harmful if swallowed, inhaled or absorbed through skin. Causes irritation 
to skin, eyes and respiratory tract.
ROUTE OF EXPOSURE, SIGNS AND SYMPTOMS
INHALATION
   Toxic. Causes irritation to the respiratory tract and systemic poisoning 
with symptoms paralleling ingestion.	 
EYE CONTACT
   May cause irritation, redness and pain.
SKIN CONTACT
        Causes irritation, redness and pain. May be absorbed through the skin 
causing systemic poisoning; symptoms may parallel ingestion.
INGESTION
   Toxic. Can irritate the mouth, esophagus, stomach, etc. Excessive amounts
affect the blood and blood vessels. Signs and symptoms of nitrite poisoning 
include intense cyanosis, nausea, dizziness, vomiting, collapse, spasms of 
abdominal pain, rapid heart beat, irregular breathing, coma, convulsions, and 
death due to circulatory collapse. Estimated lethal dose 1 to 2 grams.	
SUMMARY OF CHRONIC HAZARDS
   Repeated exposure through any route may cause symptoms similar to acute
   toxicity.
MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE
  Individuals with pre-existing or chronic diseases of the eyes, skin and
  respiratory system may have increased susceptibility to excessive exposure.
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           Section 3 -- COMPOSITION/INFORMATION ON INGREDIENTS
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INGREDIENT: Sodium Nitrite
PERCENTAGE BY WEIGHT: 44.04
CAS#: 7632-00-0 
EC#: 231-555-9
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INGREDIENT: Sodium Triphosphate 
PERCENTAGE BY WEIGHT: 23.52
CAS#: 7758-29-4
EC#: 231-838-7
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INGREDIENT: Sodium Metasilicate 
PERCENTAGE BY WEIGHT: 1.34
CAS#: 6834-92-0
EC#: 229-912-9
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INGREDIENT: Citric Acid 
PERCENTAGE BY WEIGHT: 3.36
CAS#: 77-92-9 
EC#: 201-069-1
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           Section 4 -- FIRST AID MEASURES
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   If INHALED:     If overcome by exposure, remove victim to fresh air
                   immediately.  Give oxygen or artificial respiration as 
                   needed.  Obtain emergency medical attention.  Prompt 
                   action is essential.
   If on SKIN:     Immediately wash with soap and water.  Remove and wash 
                   any contaminated clothing.
       If in EYES:     Immediately flush eyes with plenty of water for at least 15
                   minutes, lifting upper and lower eyelids occasionally. Get 
                   medical attention if irritation persists.
   If SWALLOWED:   If swallowed, call a physician or poison control 
                   immediately.  Only induce vomiting at the instruction of a 
                   physician.  Never give anything by mouth to an unconscious 
                   person.
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           Section 5 -- FIRE FIGHTING MEASURES
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Note:  Not combustible, but substance is a strong oxidizer and its heat of 
reaction with reducing agents or combustibles may cause ignition. Increases 
the flammability of any combustible material. 	
EXTINGUSING MEDIA
   Non-combustible.  Use agents appropriate for surrounding fires.
SPECIAL FIRE FIGHTING PROCEDURES:  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. 
Decomposition of sodium nitrite may leave a caustic residue. 
UNUSUAL FIRE AND EXPLOSION HAZARDS:  Contact with oxidizable substances may
cause extremely violent combustion. May explode when heated to 537 C (1000 F)
or on severe impact or on contact with cyanides, ammonium salts, cellulose,
lithium, potassium plus ammonia, and sodium thiosulfate. 
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           Section 6 -- ACCIDENTAL RELEASE MEASURES
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STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED:  Sweep up excess 
material to prevent footing hazard.  Discard in trash.
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           Section 7 -- HANDLING AND STORAGE
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PRECAUTIONS TO BE TAKEN IN HANDLING AND STORING:  Keep in a tightly closed 
container, stored in a cool, dry, ventilated area. Protect against physical 
damage and moisture. Isolate from any source of heat or ignition. Avoid 
storage on wood floors. Separate from incompatibles, combustibles, organic 
or other readily oxidizable materials. 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. 
OTHER PRECAUTIONS:  Avoid prolonged or repeated contact with skin or clothing. 
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           Section 8 -- EXPOSURE CONTROLS/PERSONAL PROTECTION
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INGREDIENT             UNITS  
Sodium Nitrite 
     ACGIH TLV      N/D
     OSHA  PEL      N/D  
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Sodium Triphosphate 
     ACGIH TLV      N/D
     OSHA  PEL      N/D
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Sodium Metasilicate   
     ACGIH TLV      N/D
     OSHA  PEL      N/D  
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Citric Acid 
     ACGIH TLV      N/D
     OSHA  PEL      N/D  
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RESPIRATORY PROTECTION (SPECIFY TYPE):  Normally none required. Use NIOSH/MSHA
approved particulate respirator for nuisance dust.
VENTILATION - LOCAL EXHAUST:  Acceptable 
SPECIAL:  N/A
MECHANICAL (GENERAL):  Acceptable 
OTHER:  N/A
PROTECTIVE GLOVES:  Wear rubber gloves.
EYE PROTECTION:  Safety glasses (ANSI Z-87.1 or equivalent)
OTHER PROTECTIVE CLOTHING OR EQUIPMENT:  Coveralls recommended.
WORK/HYGIENIC PRACTICES:  Where use can result in skin contact, wash exposed
   areas thoroughly before eating, drinking, smoking, or leaving work area. 
   Launder contaminated clothing before reuse.
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           Section 9 -- PHYSICAL AND CHEMICAL PROPERTIES
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BOILING POINT:                         N/A 
SPECIFIC GRAVITY (H20 = 1):            Soild
VAPOR PRESSURE (mm Hg):                N/A
MELTING POINT:                         N/D
VAPOR DENSITY (AIR = 1):               N/A
EVAPORATION RATE (ETHYL ACETATE = 1):  N/A
APPEARANCE/ODOR:                       Tablets / No distinct odor 
SOLUBILITY IN WATER:                   Soluble 
FLASH POINT                            None
LOWER EXPLOSION LIMIT                  N/D
UPPER EXPLOSION LIMIT                  N/D
VOLATILE ORGANIC COMPOUNDS(VOC)Content
(Theoretical Percentage By Weight):    0% or (0 g/L)
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           Section 10 -- STABILITY AND REACTIVITY 
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STABILITY:  This material is stable in closed containers at room temperature.
Material slowly oxidizes to sodium nitrate when exposed to air. Very
hygroscopic.
CONDITIONS TO AVOID:  Heat, flame, ignition sources, shock, friction, 
incompatibles.
INCOMPATIBILITY (MATERIALS TO AVOID): Reacts vigorously with reducing 
materials and is incompatible with many substances including ammonium salts, 
cellulose, cyanides, lithium, potassium plus ammonia, sodium thiosulfate, 
aminoguanide salts, butadiene, phthalic acid, phthalic anhydride, reducants,
sodium amide, sodium disulphite, sodium thiocyanate, urea, wood and organic 
matter. 
HAZARDOUS DECOMPOSITION PRODUCTS:  Oxides of nitrogen. 
HAZARDOUS POLYMERIZATION:  Will not occur.
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           Section 11 -- TOXICOLOGY INFORMATION
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CHRONIC HEALTH HAZARDS
   No ingredient in this product is an IARC, NTP or OSHA listed carcinogen.
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TOXICOLOGY DATA 
Ingredient Name
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   Sodium Nitrite 
                  Oral-Rat LD50:85 mg/kg 
                  Inhalation-Rat LC50:5500 mg/m3
   Sodium Triphosphate 
                  Oral-Rat LD50:6500 mg/kg 
                  Inhalation-Rat LCLo:N/D 
   Sodium Metasilicate 
                  Oral-Rat LD50:2000-3000 mg/kg 
                  Inhalation-Rat LCLo:N/D 
   Citric Acid 
                  Oral-Rat LD50:3 g/kg 
                  Inhalation-Rat LCLo:N/D 
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           Section 12 -- Ecological Information
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ECOLOGICAL DATA 
Ingredient Name
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   Sodium Nitrite 
                  Food Chain Concentration Potential      None 
                  WATERFOWL TOXICITY                      N/A
                  BOD                                     None
                  AQUATIC TOXICITY                17.1 ppm/24 hr/minnow  
   Sodium Triphosphate 
                  Food Chain Concentration Potential      N/D
                  WATERFOWL TOXICITY                      N/D
                  BOD                                     N/D
                  AQUATIC TOXICITY                        N/D   
   Sodium Metasilicate 
                  Food Chain Concentration Potential      None 
                  WATERFOWL TOXICITY                      N/A
                  BOD                                     None
                  AQUATIC TOXICITY         2320 ppm/96 hr/mosquito fish/TLm
   Citric Acid 
                  Food Chain Concentration Potential      None 
                  WATERFOWL TOXICITY                      N/A
                  BOD                                     40%
                  AQUATIC TOXICITY         894 ppm/4 hr/goldfish 
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           Section 13 -- DISPOSAL CONSIDERATIONS
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Waste Classification:  Non-regulated solid waste
Disposal Method:       Whatever cannot be saved for recovery or recycling 
should be handled as hazardous waste and sent to a RCRA approved waste 
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.
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           Section 14 -- TRANSPORTATION INFORMATION
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DOT: UN1479, Oxidizing substances, solid, n.o.s.,(Sodium Nitrite), Class 5.1, 
       PGIII, LTD QTY, ERG#140 
OCEAN (IMDG):  UN1479, Oxidizing substances, solid, n.o.s.,(Sodium Nitrite),Class 5.1, 
                 PGIII, LTD QTY, EMS-No: F-A, S-Q
AIR (IATA):  UN1479, Oxidizing substances, solid, n.o.s.,(Sodium Nitrite), Class 5.1, 
               PGIII, LTD QTY, ERG#140 
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           Section 15 -- REGULATORY INFORMATION
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REGULATORY DATA
Ingredient Name
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      Sodium Nitrite 
                  SARA 313          Yes
                  TSCA Inventory    Yes
                  CERCLA RQ         100 lb.
                  RCRA Code         N/A   
      Sodium Triphosphate 
                  SARA 313           No
                  TSCA Inventory    Yes
                  CERCLA RQ         N/A
                  RCRA Code         N/A   
      Sodium Metasilicate 
                  SARA 313           No
                  TSCA Inventory    Yes
                  CERCLA RQ         N/A
                  RCRA Code         N/A   
      Citric Acid 
                  SARA 313           No
                  TSCA Inventory    Yes
                  CERCLA RQ         N/A
                  RCRA Code         N/A   
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           Section 16 -- OTHER INFORMATION
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   This document is prepared pursuant to the OSHA Hazard Communication 
Standard (29 CFR 1910.1200).  The information herein is given in good faith,
but no warranty, expressed or implied is made.  Consult RectorSeal for further
information:  (713) 263-8001