MATERIAL SAFETY DATA SHEET
MSDS 0681

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            Section 1 -- PRODUCT AND COMPANY IDENTIFICATION                      
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                                                           HMIS CODES
PRODUCT NAME                                            Health            3
   Calci-Free                                           Flammability      0
                                                        Reactivity        0
PRODUCT CODES                                           PPI               D
   68708
CHEMICAL FAMILY
   Inorganic Acids
USE
   Scale Remover 
MANUFACTURER'S NAME                          EMERGENCY TELEPHONE NO.
   The RectorSeal Corporation                 Chemtrec 24 Hours
   2601 Spenwick Drive                        (800) 424-9300 
   Houston, Texas  77055  USA                         
VALIDATION DATE                              TECHNICAL SERVICE TELEPHONE NO. 
   July 14, 2009                              (800) 231-3345
REVISION DATE
   July 14, 2009                                 
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           Section 2 -- COMPOSITION/INFORMATION ON INGREDIENTS
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% by WT        CAS No.  INGREDIENT             UNITS          
 70-99       5329-14-6  Sulfamic Acid 
                             ACGIH TLV      N/D
                             OSHA  PEL      N/D
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           Section 3 -- HAZARDS IDENTIFICATION
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SUMMARY OF ACUTE HAZARDS
   Exposure to human tissue will result in irritation and subsequent chemical 
burns, bronchitis, pulmonary edema and chemical pneumonitus.
INHALATION
   Respiratory and mucous membrane irritation, coughing, difficulty breathing.
EYE CONTACT
   Corrosive, causes eye burns.	
SKIN CONTACT
   Causes skin irritation. Prolonged contact may cause skin burns.	
INGESTION
   Burns on mouth and lips, sour acrid taste, severe gastrointestinal 
irritation, nausea, vomiting, bloody diarrhea, difficult swallowing, severe 
abdominal pains, thirst, acidemia, difficult breathing, convulsions, collapse, 
shock, possible death.
SUMMARY OF CHRONIC HAZARDS
   Bronchitis, pulmonary edema and chemical burns, bronchitis and chemical 
pneumonitus; possible death.
MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE
         Skin disorders, eye problems, impaired liver and kidney, or
respiratory function.
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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 flush with large amounts of water; use soap if 
                   available.  Remove contaminated clothing.
   If in EYES:     Immediately flush eyes with gentle but large stream of
                   water for at least 15 minutes, lifting lower and upper
                   eyelids
                   occasionally. Call a physician immediately. 
   If SWALLOWED:   If swallowed, call a physician 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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FLASH POINT                         LEL      UEL
   None                             N/A      N/A
EXTINGUSING MEDIA
   Use agents appropriate for surrounding fires.
SPECIAL FIRE FIGHTING PROCEDURES:  Wear self-contained breathing apparatus 
   (SCBA) and other protective clothing.  Hazardous decomposition products 
possible (see Section 10).  Evacuate immediate area.  
UNUSUAL FIRE AND EXPLOSION HAZARDS:  May release sulfur dioxide (SO2), sulfur 
trioxide (SO3), and ammonia gas (NH3) if involved in a fire.
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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 spillage 
and flush the area with large quantities of water.  May be neutralized with
sodium bicarbonate mixed with water.
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           Section 7 -- HANDLING AND STORAGE
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PRECAUTIONS TO BE TAKEN IN HANDLING AND STORING:  Prevent from absorption of 
moisture and possible caking. Should be stored in a cool and dry place. Do not 
store with cyanides, sulfides, chlorine, hypochlorous acid, or hypochlorites.
OTHER PRECAUTIONS:  Refrain from splashing product when pouring.  Avoid all 
contact with skin or clothing.  Empty containers may contain residues and 
vapors.  KEEP OUT OF REACH OF CHILDREN.
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           Section 8 -- EXPOSURE CONTROLS/PERSONAL PROTECTION
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RESPIRATORY PROTECTION (SPECIFY TYPE):  In confined poorly ventilated areas, 
use NIOSH/MSHA approved air purifying or supplied air purifying or supplied
air respirators.
VENTILATION - LOCAL EXHAUST:  Acceptable
SPECIAL:  N/A
MECHANICAL (GENERAL):  Acceptable
OTHER:  N/A
PROTECTIVE GLOVES:  Wear acid resistant gloves (neoprene, PVC, butyl rubber).
EYE PROTECTION:  Full-face shield and chemical splash goggles (ANSI Z-87.1 or
equivalent).  
OTHER PROTECTIVE CLOTHING OR EQUIPMENT:  Acid resistant vinyl or polyethylene
coated coveralls.
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:                         214 F (101 C) @ 760mm Hg	
SPECIFIC GRAVITY (H20 = 1):            2.126
VAPOR PRESSURE (mm Hg):                N/A
MELTING POINT:                         N/A
VAPOR DENSITY (AIR = 1):               N/A
EVAPORATION RATE (ETHYL ACETATE = 1):  N/A
APPEARANCE/ODOR:                       White solid / None
SOLUBILITY IN WATER:                   Soluble
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:  Stable
CONDITIONS TO AVOID:  Incompatables
INCOMPATIBILITY (MATERIALS TO AVOID):  Hazardous reaction in aqueous solution
may occur with chlorine, hypochlorous acid, hypochlorites, cyanides, nitric 
acid, or sulfides. An explosion occurred when chlorine was being passed at
room temperature into a reaction mixture which included sulfamic acid and
water. Itis suspected that nitrogen trichloride, a very sensitive explosive,
was formed.  Fuming nitric acid combined with sulfamic acid causes violent
releases of nitrous oxide.
HAZARDOUS DECOMPOSITION PRODUCTS:  Decomposes with heat (209C) to release
sulfur dioxide (SO2), sulfur trioxide (SO3), nitrogen (N2), water (H2O), and
ammonia gas (NH3).
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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   Sulfamic Acid 
                  Oral-Rat LD50:3160 mg/kg 
                  Inhalation-Rat LC50:N/D 
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           Section 12 -- Ecological Information
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ECOLOGICAL DATA 
Ingredient Name
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   Sulfamic Acid 
                  Food Chain Concentration Potential      N/D
                  WATERFOWL TOXICITY                      N/D
                  BOD                                     N/D
                  AQUATIC TOXICITY                        N/D 
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           Section 13 -- DISPOSAL CONSIDERATIONS
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Waste Classification:  Corrosive(D002)
Disposal Method:       Neutralization  
RCRA classified hazardous waste.  Dispose of absorbed materials and liquid 
waste in accordance with all local, state and federal regulations.
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           Section 14 -- TRANSPORTATION INFORMATION
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DOT:  Corrosive solid, n.o.s. (sulfamic acid), Class 8, UN1759, PGIII, 
        ERG#154
Individual containers under 11 lbs.:  Consumer Commodity, ORM-D 
OCEAN (IMDG):  Corrosive solid, n.o.s. (sulfamic acid), Class 8, UN1759,
                 PGIII, EmS#8-15, MFAG#760
Individual containers under 11 lbs.:  Corrosive solid, n.o.s. (sulfamic acid), 
Class 8, UN1759, PGIII, EmS#8-15, MFAG#760 Limited Quantities or Ltd Qty
AIR (IATA):  Corrosive solid, n.o.s. (sulfamic acid), Class 8, UN1759, PGIII, 
        ERG#154
WHMIS (CANADA):  Class E
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           Section 15 -- REGULATORY INFORMATION
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REGULATORY DATA
Ingredient Name
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   Sulfamic 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