Auramine O, C.I. 41000

1. Identification

Product Identifiers

Product Name

Auramine O, C.I. 41000

Other Names

2,4,4'-(Imidocarbonyl)bis(N,N-dimethylaniline) monohydrochloride, C.I. 41000, Basic Yellow 2, Auramine hydrochloride, Canary Yellow, bis[4-(dimethylamino)phenyl]methaniminium chloride

Product Number(s)

C067, C0671, C0675.

CAS Number

2465-27-2

Recommended use of the chemical and restriction on use

Company Details

Emergency Contact Details

2. Hazards Identification

Classification of the substance or mixture

Label Elements

Signal Words

Warning

Hazard Statement(s)

• H302 Harmful if swallowed.
• H319 Causes serious eye irritation.
• H351 Suspected of causing cancer.
• H411 Toxic to aquatic life with long-lasting effects.

Precautionary Statement(s)

• P201 Obtain special instructions before use.
• P202 Do not handle until all safety precautions have been read and understood.
• P264 Wash thoroughly after handling.
• P270 Do not eat, drink or smoke when using this product.
• P280 Wear protective gloves/protective clothing/eye protection/face protection.
• P301±P312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
• P302±P352 IF ON SKIN: Wash with plenty of soap and water.
• P308±P313 IF exposed or concerned: Get medical advice/attention.
• P330 Rinse mouth.
• P361 Remove/Take off immediately all contaminated clothing.
• P363 Wash contaminated clothing before reuse.
• P405 Store locked up.
• P391 Collect spillage.
• P273 Avoid release to the environment.
• P337±P313 If eye irritation persists: get medical attention.
• P501 Dispose of contents/container to an approved waste disposal plant.

Primary route(s) of entry

Human Health

Inhalation

Not available.

Ingestion

Not available.

Eyes

Not available.

Skin

Not available.

Environment

3. Composition / Information on Ingredients

4. First Aid Measures

Ingestion

Do not induce vomiting without medical advice. Wash out mouth with water and obtain medical attention.

Inhalation

• If inhaled, remove from contaminated area to fresh air immediately. Apply artificial respiration if not
• breathing. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.

Skin Contact

Wash affected areas with copious quantities of soap and water immediately for at least 15 minutes while removing contaminated clothing and shoes. Seek medical attention if irritation develops or persist.

Eye Contact

Immediately flush eyes with plenty of water for at least 15 minutes, lifting upper and lower eyelids occasionally. Seek medical attention urgently.

Other Information

For advice, contact a Poisons Information Centre (Phone eg Australia 13 1126 New Zealand 0800 764 766) or a doctor.

5. Firefighting Measures

Suitable extinguishing equipment

Fire

Use water spray to cool fire exposed containers. Use water, dry chemical foam, or alcohol-resistant foam, or appropriate foam.

HAZCHEM

Hydrogen chloride, carbon monoxide, oxides of nitrogen, carbon dioxide.

Special protective equipment and precautions for fire fighters

6. Accidental Release Measures

Personal precautions, protective equipment and emergency procedures

• Avoid substance contact. Avoid generation of dusts: do not inhale dusts. Ensure supply of fresh air in enclosed room.
• Wear protective clothing specified for normal operations (see Section 8)

Environmental precautions

Clean up spills immediately, observing precautions in the Protective Equipment section.

Methods and materials for containment and clean up

Sweep up (avoid generating dust) and remove to a suitable, clearly labelled container for disposal in accordance with local regulations.

7. Handling and Storage

Precautions for safe handling

Wash hands and face thoroughly after working with material. Use with adequate ventilation. Avoid generation or accumulation of dusts. Avoid contact with eyes, skin and clothing. Avoid ingestion and inhalation of material. Keep container tightly closed when not in use.

Conditions for safe storage

Keep container tightly closed Keep in a cool, dry, well-ventilated place. Store away from incompatible substances.

8. Exposure Controls / Personal Protection

Exposure Standards

Engineering controls

• No exposure standards have been established for this product by Safe Work Australia, however, the TWA exposure standard for dusts not otherwise specified is 10 mg/m3.
• In industrial situations maintain the concentrations values below the TWA. This may be achieved by process modification, use of local exhaust ventilation, capturing substances at the source, or other methods.

Personal protective equipment

Eye and face protection

The use of a face shield, chemical goggles or safety glasses with side shield protection as appropriate. Must comply with Australian Standards AS 1337 and be selected and used in accordance with AS 1336.

Skin protection

Hand protection should comply with AS 2161, Occupational protective gloves - Selection, use and maintenance. 0.11mm thick nitrile gloves.

Body protection

• Final choice of personal protective equipment will depend on individual circumstances and/or according to risk assessments undertaken.
• Safety boots in industrial situations is advisory, foot protection should comply with AS 2210, Occupational protective footwear - Guide to selection, care and use.
• Appropriate protective clothing.
• Wash hands before eating, drinking, smoking and using the toilet.

Respiratory protection

• Where ventilation is not adequate, respiratory protection may be required. Avoid breathing dust, vapours or mists. Respiratory protection should comply with AS 1716 - Respiratory Protective Devices and be selected in accordance with AS 1715 - Selection, Use and Maintenance of Respiratory Protective
• Devices. Filter capacity and respirator type depends on exposure levels. In event of emergency or planned entry into unknown concentrations a positive pressure, full-facepiece SCBA should be used. If respiratory protection is required, institute a complete respiratory protection program including selection, fit testing, training, maintenance and inspection.

9. Physical and Chemical Properties

General information

Appearance

Yellow-green powder.

Odour

Odourless

pH

Not available.

Vapour Pressure

Negligible.

Density

>1

Boiling Point

Not available.

Melting Point

267 °C

Solubility

Soluble in water 10 g/l at 20°C

Specific Gravity of Density

Not available.

Flash Point

Not available.

Flammable (Explosive) Limits

Not available.

Ignition Temperature

Not available.

Formula

C17H22N3Cl

10. Stability and Reactivity

Reactivity

No further relevant information available.

Chemical stability

Stable at room temperature in closed containers under normal storage and handling conditions.

Possibility of hazardous reactions

Hydrogen chloride, carbon monoxide, oxies of nitrogen, carbon dioxide.

Conditions to avoid

Dust generation. Incompatibles. Excess heat.

Incompatible materials

Strong oxidising agents.

11. Toxicological Information

Acute effects

• Auramine (492-80-8) IARC group 2B: No data available on human carcinogenicity, however sufficient evidence of carcinogenicity in animals.
• Suspected Gastrointestinal or Liver Toxicant.
• May cause cancer according to animal studies
• .No evidence of mutagenic properties.

Eye contact

May cause irritation. May cause irreversible eye injury.

Skin contact

Toxic if absorbed through the skin. May cause skin irritation.

Ingestion

May cause irritation of the digestive tract.

Inhalation

May cause irritation to the respiratory tract.

Toxicity and irritation

• Acute Toxicity - Oral Mouse LD50 = 480mg/kg
• Acute Toxicity - Mouse LD50 = 300 mg/

12. Ecological Information

Ecotoxicity

No further relevant information available.

Persistence and degradability

Will slowly biodegrade but not bioconcentrate.

Bioaccumulative potential

• Terrestrial: May undergo covalent chemical bonding with humic materials which can result in its chemical alteration to a latent form and tight adsorption. When covalently bound in this latent form, leaching in soil
• systems is not expected to occur.
• Aquatic: May undergo covalent bonding with humic materials in the water column and sediment.
• Atmospheric: Particulate phase auramine hydrochloride will probably be removed from air via dry deposition, or degraded in air by photolysis based on its UV spectrum.

Other adverse effects

No further relevant information available.

13. Disposal Considerations

General information

14. Transport Information

ADG label required

HAZCHEM

Hydrogen chloride, carbon monoxide, oxides of nitrogen, carbon dioxide.

UN Number

Not regulated

Proper shipping name

Not regulated

Environmental hazard

No information available.

Special precautions for users

No information available.

Additional information

Not regulated

15. Regulatory Information

Poisons Schedule Number

Not scheduled.

Other Information

No further relevant information available.

16. Other Information

SDS preparation date

18 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.