MATERIAL SAFETY DATA SHEET
GENERAL 
MANUFACTURER'S NAME 
Sta-Rite Industries, Inc.
EMERGENCY TELEPHONE NUMBERS 
1-800-424-9300 
ADDRESS 38655 Sky Canyon Drive 
Murrieta, CA 92563 
PRODUCT NAME/IDENTITY OTO (Orthotolidine) DATE OF LAST REVISION 
01/31/00 
INGREDIENTS 
HAZARDOUS INGREDIENTS CAS # % TLV OSHA PEL 
Orthotolidine dihydrochloride 612-82-8 .1 NE NE 
Hydrochloric Acid 7647-01-0 3.7 5 ppm 5 ppm 
PHYSICAL DATA 
BOILING POINT (
C) ~100° DENSITY (gm cc) ~1.01 
VAPOR PRESSURE (mmHg) <14 mm Hg % VOLATILE BY VOLUME (%) 99 
REACTION WITH WATER None EVAPORATION RATE (H2O = 
1) 
Similar to water 
SOLUBILITY IN WATER 100% MELTING POINT (
C) 0 
APPEARANCE AND ODOR Clear - Odorless pH <1.0 
OTHER COMMENTS VAPOR DENSITY (AIR=1) N/A 
FIRE HAZARDSFLASH POINT (method 
used) 
N/A 
AUTOIGNITION TEMP 
(
C) 
N/A 
FLAMMABLE LIMITS IN AIR LEL N/A 
UEL N/A 
EXTINGUISHING MEDIA N/A 
SPECIAL FIRE FIGHTING PROCEDURES N/A 
UNUSUAL FIRE AND EXPLOSION HAZARDS NoneHEALTH HAZARDS 
TOXICITY DATA Oral rat LD50 for hydrochloric acid = 900 mg/kg. 
No data for orthotolidine dihydrochloride 
HMIS HAZARD RATING 
Health: N 
Flammability: N 
Reactivity: N 
ROUTE (S) OF ENTRY: INHALATION? SKIN? INGESTION? X 
EFFECTS OF OVEREXPOSURE (acute and chronic) 
INHALATION: Inhalation of vapors may cause respiratory tract irritation. 
DERMAL/EYE CONTACT: May cause skin and eye irritation. Prolonged contact may cause more sev 
irritation. 
OTHER (Specify): Ingestion may cause gastrointestinal irritation. 
MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE Pre-existing skin or respiratory syst 
ailments. 
CARCINOGENICITY NTP? No IARC MONOGRAPHS? No OSHA REGU 
No 

FIRST AID 
EMERGENCY AND FIRST AID PROCEDURES: 
INGESTION: Have victim drink large volumes of water. DO NOT INDUCE VOMITING! Seek medica 
attention. 
INHALATION: Remove to fresh air. If breathing is difficult, give oxygen. 
SKIN CONTACT: Flush area with copious amounts of water. If irritation persists, seek medical 
attention. 
EYE CONTACT: Flush with water for at least 15 minutes. Seek immediate medical attention.
REACTIVITY 
STABILITY STABLE X CONDITIONS CONTRIBUTING TO INSTABILITY NoneUNSTABLE 
INCOMPATIBILITY (materials to avoid) Caustics/bases, metals. 
HAZARDOUS DECOMPOSITION PRODUCTS - THERMAL AND OTHER (list) HCL 
HAZARDOUS 
POLYMERIZATIONMAY OCCUR CONDITIONS TO AVOID None 
WILL NOT OCCUSPILLS/LEAKS 
STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED 
Contain and cover spill with soda ash or sodium bicarbonate. Scoop up material and place in con 
Flush area with water. 
WASTE DISPOSAL METHOD (Consult federal, state, or local authorities for proper disposal 
procedures.) 
Neutralize with soda ash or sodium bicarbonate. Dispose of in accordance with federal, state, a 
law. 
EXPOSURE CONTROL 
RESPIRATORY PROTECTION (specify type). USE ONLY NIOSH-APPROVED EQUIPMENT. 
Not required under normal use.
VENTILATION (always 
maintain exposure 
below permissible 
limits) 
LOCAL EXHAUST Not normally 
required 
SPECIAL None 
MECHANICAL (general) Gene 
adequate 
OTHER None 
PROTECTIVE GLOVES Required – Neoprene or Nitrile EYE PROTECTION Safety Glasses 
OTHER PROTECTIVE EQUIPMENT/WORK PRACTICES 
Protect against splashes to skin and clothing. 
MISCELLANEOUS 
PRECAUTIONS TO BE TAKEN IN HANDLING AND STORING Keep dry. 

TRANSPORTATION REQUIREMENTS 
DOT CLASS: N/A (not-regulated) 
UN NUMBER: N/A 
IMCO CLASS: N/A 
OTHER: N/A 
The above information is accurate to the best of our knowledge. However, since data, safety standards, and governm 
regulations are subject to change and the conditions of handling and use, or misuse are beyond 
control, WE MAKE NO WARRANTY, EITHER EXPRESSED OR IMPLIED, WITH RESPECT TO THE COMPLETENESS 
CONTINUING ACCURACY OF THE INFORMATION CONTAINED HEREIN AND DISCLAIMS ALL LIABILITY FOR RELIA 
THEREON: User should satisfy himself that he has all current data relevant to his particular use. 
ND = NO DATA FOUND NA = NOT APPLICABLE NE = NOT ESTABLISHED