CAS No. 76-61-9
Chemical Formula C27H30O5S
Molecular Weight 466.60
Melting Point 221 - 224 c
Dye Content ~95%
Solution Clarity (EtOH) To pass
Transition Range pH 1.2 - 2.8 Red to Yellow
pH 7.8 - 9.5 Yellow to Blue
Absorptivity (pH 1.2) 543-547 nm 400 - 500
Absorptivity (pH 2.8) 431-436 nm 200 - 300
Absorptivity (pH 7.8) 431-436 nm 200 - 300
Absorptivity (pH 9.5) 594-598 nm 450 - 550
Loss On Drying (110 c) <3%


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Hazards identification

         Hazard description: Not applicable

         Information pertaining to particular dangers for man and environment
Not applicable

         Classification system

         HMIS ratings (scale 0-4)

(Hazardous Materials Identification System)

Health (acute effects) = 1
Flammability = 1
Reactivity = 1

4 First aid measures

         After inhalation
Supply fresh air. If required, provide artificial respiration. Keep patient warm.
Seek immediate medical advice.

         After skin contact
Immediately wash with water and soap and rinse thoroughly.
Seek immediate medical advice.

         After eye contact
Rinse opened eye for several minutes under running water. Then consult a doctor.

After swallowing Seek medical treatment

Transport information

Not a hazardous material for transportation.
         DOT regulations:

         Hazard class: None
         Land transport ADR/RID (cross-border)

         ADR/RID class: None
         Maritime transport IMDG:

         IMDG Class: None

         Air transport ICAO-TI and IATA-DGR:

         ICAO/IATA Class: None

Transport/Additional information:
Not dangerous according to the above specifications.


It must be recognised that the physical and chemical properties of any product may not be fully understood and that new, possibly hazardous products may arise from reactions between chemicals. The information given in this data sheet is based on our present knowledge and shall not constitute a guarantee for any specific product features and shall not establish a legally valid contractual relationship.

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