ProSciTech Safety Data Sheets ProSciTech Pty Ltd · proscitech.com.au

SAFETY DATA SHEET

Orange II, C.I. 15510

Version 1Last reviewed 25 February 2026Catalogue: C131, C1311, C1315

1. Identification

Product Identifiers

Product Name
Orange II, C.I. 15510
Other Names
Acid Orange 7, Acid Orange A, Tropaeolin
Product Number(s)
C131, C1311, C1315
CAS Number
633-96-5

Recommended use of the chemical and restriction on use

Laboratory use.

Company Details

ProSciTech Pty Ltd
11 Carlton Street
KIRWAN QLD 4817
Australia
(07) 4773 9444
pst@proscitech.com
proscitech.com.au

Emergency Contact Details

ProSciTech Pty Ltd
11 Carlton Street
KIRWAN QLD 4817
Australia
(07) 4773 9444
pst@proscitech.com
proscitech.com.au

2. Hazards Identification

Classification of the substance or mixture

  • GHS
  • Acute Aquatic Hazard (Category 3)

Label Elements

Signal Words
Danger
Hazard Statement(s)
H402: Harmful to aquatic life.
Precautionary Statement(s)
  • P273: Avoid release into the environment.
  • P501: Dispose of contents/container to an approved waste disposal plant.

Primary route(s) of entry

Not available.

Human Health

Inhalation
No further relevant information available.
Ingestion
No further relevant information available.
Eyes
No further relevant information available.
Skin
No further relevant information available.

Environment

Avoid release into the environment.

3. Composition / Information on Ingredients

NameCAS No.Content (w/w)Classification
Sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulphonate633-96-590-100%-

4. First Aid Measures

Ingestion
Do not induce vomiting without medical advice. Rinse with water. Consult physician.
Inhalation
Move to fresh air. Consult a physician.
Skin Contact
Rinse with plenty of soap & water and seek medical advice.
Eye Contact
In the case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
Other Information
Treat symptomatically and supportively.

5. Firefighting Measures

Suitable extinguishing equipment

Fire
Use water spray, dry chemical, carbon dioxide, or alcohol-resistant foam.
HAZCHEM
Carbon, Nitrogen, Sulphur, & Sodium oxiodes.

Special protective equipment and precautions for fire fighters

As in any fire, wear self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.

6. Accidental Release Measures

Personal precautions, protective equipment and emergency procedures
Use proper personal protective equipment as indicated in Section 8.
Environmental precautions
Not available.
Methods and materials for containment and clean up
  • Vacuum or sweep up material and place into a suitable disposal container. Clean up dusty conditions.
  • Provide ventilation.

7. Handling and Storage

Precautions for safe handling
  • Wash thoroughly after handling.
  • Use with adequate ventilation.
  • Minimize dust generation and accumulation.
  • Avoid contact with eyes, skin, and clothing.
  • Keep container tightly closed.
  • Avoid ingestion and inhalation.
Conditions for safe storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

8. Exposure Controls / Personal Protection

Exposure Standards

Engineering controls
Facilities storing or utilising this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low. OSHA Vacated PELs: Acid Orange 7: No OSHA Vacated PELS are listed for this chemical.

Personal protective equipment

Eye and face protection
Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin protection
Wear appropriate protective gloves to prevent skin exposure. 0.11mm thick nitrile.
Body protection
Wear appropriate protective clothing to prevent skin exposure.
Respiratory protection
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI z88.22 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

9. Physical and Chemical Properties

General information

Appearance
Orange to red powder.
Odour
None reported.
pH
Not available.
Vapour Pressure
Not available.
Density
Not available.
Boiling Point
Not available.
Melting Point
164 deg C
Solubility
116g/L (30 C)
Specific Gravity of Density
Not available.
Flash Point
Not applicable.
Flammable (Explosive) Limits
Not available.
Ignition Temperature
Not applicable.
Formula
C16H11N2NaO4S

10. Stability and Reactivity

Reactivity
No further relevant information available.
Chemical stability
Stable under normal temperatures and pressures.
Possibility of hazardous reactions
No further relevant information available.
Conditions to avoid
Incompatible materials, dust generation, excess heat.
Incompatible materials
Oxidizing agents.

11. Toxicological Information

Acute effects
No further relevant information available.
Eye contact
No further relevant information available.
Skin contact
No further relevant information available.
Ingestion
No further relevant information available.
Inhalation
May cause respiratory irritation.
Toxicity and irritation
No further relevant information available.

12. Ecological Information

Ecotoxicity
No further relevant information available.
Persistence and degradability
No further relevant information available.
Bioaccumulative potential
No further relevant information available.
Other adverse effects
No further relevant information available.

13. Disposal Considerations

General information

Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3. Additionally waste generators must consult state and local hazardous waste regulations to ensure complete and accurate classification.

14. Transport Information

ADG label required

HAZCHEM
Carbon, Nitrogen, Sulphur, & Sodium oxiodes.
UN Number
None
Proper shipping name
Not regulated.
Transport hazard class
0
Packing group
None.
Environmental hazard
No information available.
Special precautions for users
No information available.
Additional information
No information available.

15. Regulatory Information

Poisons Schedule Number
Not listed.
Other Information
Acute Health Hazard

16. Other Information

SDS preparation date
25 February 2026
Comments
This information is based on our present knowledge. However, this shall not constitute a guarantee for any specific product features and shall not establish a legally valid contractual relationship.