GFS CHEMICALS, INC.

                                            P.O. Box 245 Powell, OH 43065

                                         740-881-5501(Tel.) 740-881-5989(Fax)

                                         1-800-424-9300(Chemtrec 24Hr. Info.)



                                         MATERIAL SAFETY DATA SHEET

                                                                                                               508

                   2-HYDROXY-1-(2-HYDROXY-4-SULFO-1-NAPHTHYLAZO-3-NAPHTHOIC ACID)



CHEMICAL NAME & SYNONYMS                                                        DOT CLASS     SARA TITLE 313

2-Hydroxy-1-(2-Hydroxy-4-Sulfo-1-Naphthylazo-3-                                 NR            No

Naphthoic Acid); HHSNNA; Cal Red Indicator                                      TSCA listed - Yes



FORMULA                                    REPORTABLE QUANTITY                  F.W.          CAS#

C 10H 5(OH)(SO 3H)N=NC 10H 5(OH)(COOH)             N/A                          438.42        3737-95-9

Azo dye



PHYSICAL DATA

Melting point 300°C; Indicator dye; Slightly soluble in water; Soluble in alkaline solutions.



APPEARANCE & ODOR

Dark red powder. Odorless.



REACTIVITY & CONDITIONS TO AVOID

Stable. No hazardous reactivity. Incompatible with strong oxidizers.



FIRE HAZARDS

Will be consumed in general fire. Fumes will contain NOx, SOx and COx. Firefighters wear SCBA.

NFPA # 1-1-0



EXTINGUISHER                                                                    FLASHPOINT    LEL      UEL

Fight surrounding fire.                                                         N/A           N/A      N/A



HEALTH HAZARDS

May irritate eyes and mucous membranes. Will stain skin on contact. No LD/TD data found. OSHA

PEL/ACGIH TLV not established. May be harmful if swallowed or inhaled. The chemical, physical

and toxicological properties have not been fully investigated. No evidence of carcinogenicity.



SPECIAL PRECAUTIONS

Wear goggles and rubber gloves while handling. Use good ventilation or suitable respirator if

dust is raised.



FIRST AID

Wash skin and eyes thoroughly with water after contact. If swallowed, give water or milk to

drink and get medical attention.



SPILLS & LEAKS

Wash up with water. Minimize dust formation. Disposal to drain is acceptable in most areas,

check local regulations. Incineration is an appropriate disposal method.





CATALOG #                                                             PREPARED BY                      DATE

508                                                                       MDM                       April 19, 2007



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