Congo Red 0.5% Aqueous Solution

1. Identification

Product Identifiers

Product Name

Congo Red 0.5% Aqueous Solution

Other Names

Synonyms

Product Number(s)

EMS26090-20

CAS Number

7732-18-5 Deionised Water, Reagent Grade A.C.S.

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

None

Hazard Statement(s)

• H302 Harmful if swallowed
• H312 Harmful in contact with skin
• H317 May cause an allergic skin reaction
• H319 Causes serious eye irritation
• H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
• H341 Suspected of causing genetic defects
• H351 Suspected of causing cancer
• H361 Suspected of damaging fertility or the unborn child
• H373 May cause damage to organs through prolonged or repeated exposure

Precautionary Statement(s)

• Obtain special instructions before use.
• Do not handle until all safety precautions have been read and understood.
• Do not breathe dust/fume/gas/mist/vapours/spray.
• Wash thoroughly after handling.
• Do not eat, drink or smoke when using this product.
• Contaminated work clothing must not be allowed out of the workplace.
• Wear protective gloves/protective clothing/eye protection/face protection.
• [In case of inadequate ventilation] wear respiratory protection.
• If swallowed: Call a poison center/doctor if you feel unwell.
• Rinse mouth.
• If on skin: Wash with plenty of water.
• If inhaled: If breathing is difficult, remove person to fresh air and keep comfortable for breathing.
• If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do.
• Continue rinsing.
• IF exposed or concerned: Get medical advice/attention.
• Specific treatment (see on this label).
• Get medical advice/attention if you feel unwell.
• Take off contaminated clothing and wash it before reuse.
• If skin irritation or rash occurs: Get medical advice/attention.
• If eye irritation persists: Get medical advice/attention.
• If experiencing respiratory symptoms: Call a poison center/doctor.
• Wash contaminated clothing before reuse.
• Store locked up.
• Dispose of contents/container in accordance with local/regional/national/international regulations

Primary route(s) of entry

Human Health

Inhalation

• May cause allergy or asthma symptoms or breathing difficulties if inhaled.
• May cause damage to organs through prolonged or repeated exposure
• Do not breathe dust/fume/gas/mist/vapours/spray

Ingestion

• Harmful if swallowed or in contact with skin.
• Acute Toxicity - Oral 4
• Toxic to Reproduction 2
• Specific Target Organ Toxicity - Repeated Exposure 2

Eyes

• Causes serious eye irritation
• Eye Irritation 2

Skin

• May cause an allergic skin reaction
• Acute Toxicity - Dermal 4
• Sensitization -
• Carcinogenicity 2
• Germ Cell Mutagenicity 2
• Skin 1B
• Respiratory 1B

Environment

3. Composition / Information on Ingredients

4. First Aid Measures

Ingestion

If symptoms persist consult doctor

Inhalation

• Supply fresh air and to be sure call for a doctor.
• In case of unconsciousness place patient stably in side position for transportation.

Skin Contact

Immediately wash with water and soap and rinse thoroughly

Eye Contact

Rinse opened eye for several minutes under running water. If symptoms persist, consult a doctor

Other Information

No further relevant information available.

5. Firefighting Measures

Suitable extinguishing equipment

Fire

Use fire fighting measures that suit the environment

HAZCHEM

No further relevant information available.

Special protective equipment and precautions for fire fighters

6. Accidental Release Measures

Personal precautions, protective equipment and emergency procedures

Not required

Environmental precautions

• Dilute with plenty of water.
• Do not allow to enter sewers/ surface or ground water.

Methods and materials for containment and clean up

• Absorb with liquid-binding material (sand, diatomite, acid binders, universal binders, sawdust).
• Dispose contaminated material as waste according to item 13.
• Ensure adequate ventilation.

7. Handling and Storage

Precautions for safe handling

• Ensure good ventilation/exhaustion at the workplace.
• Prevent formation of aerosols
• No special measures required

Conditions for safe storage

• Requirements to be met by storerooms and receptacles: No special requirements.
• Information about storage in one common storage facility: Not required.
• Further information about storage conditions: Keep receptacle tightly sealed.
• Specific end use(s) No further relevant information available.

8. Exposure Controls / Personal Protection

Exposure Standards

Engineering controls

• Keep away from foodstuffs, beverages and feed.
• Immediately remove all soiled and contaminated clothing.
• Wash hands before breaks and at the end of work.
• Avoid contact with the eyes.
• Avoid contact with the eyes and skin.

Personal protective equipment

Eye and face protection

Tightly sealed goggles

Skin protection

Protective gloves - The glove material has to be impermeable and resistant to the product/ the substance/ the preparation. The selection of the suitable gloves does not only depend on the material, but also on further marks of quality and varies from manufacturer to manufacturer.

Respiratory protection

In case of brief exposure or low pollution use respiratory filter device. In case of intensive or longer exposure use respiratory protective device that is independent of circulating air.

9. Physical and Chemical Properties

General information

Appearance

Red liquid

Odour

Odourless

pH

Not determined

Vapour Pressure

23 hPa (17.3 mm Hg) at 20 °C (68 °F)

Density

1 g/cm³ (8.345 lbs/gal) at 20 °C (68 °F)

Boiling Point

100 °C (212 °F)

Melting Point

0 °C (32 °F)

Solubility

Fully miscible

Specific Gravity of Density

Not determined

Flash Point

Not applicable

Flammable (Explosive) Limits

Product does not present an explosion hazard

Ignition Temperature

Not determined

Formula

• C32H22N6Na2O6S2
• Viscosity:
• Dynamic at 20 °C (68 °F): 0.952 mPas
• Kinematic: Not determined.
• Water: 99.5 %
• VOC content: 0.00 %
• 0.0 g/l / 0.00 lb/gal

10. Stability and Reactivity

Reactivity

No further relevant information available

Chemical stability

Stable

Possibility of hazardous reactions

No dangerous reactions known.

Conditions to avoid

No further relevant information available

Incompatible materials

No further relevant information available

11. Toxicological Information

Acute effects

• LD/LC50 values that are relevant for classification:
• 573-58-0 disodium 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(4-aminonaphthalene-1-sulphonate)
• Oral LD50 15,200 mg/kg (rat)

Eye contact

Irritating effect

Skin contact

• No irritant effect
• Sensitization possible through skin contact

Inhalation

Sensitization possible through inhalation

Toxicity and irritation

• NTP (National Toxicology Program)
• 573-58-0 disodium 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(4-aminonaphthalene-1-sulphonate) K

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

• Water hazard class 2 (Self-assessment): hazardous for water
• Do not allow product to reach ground water, water course or sewage system.
• Danger to drinking water if even small quantities leak into the ground.
• Other adverse effects : No further relevant information available.

13. Disposal Considerations

General information

14. Transport Information

ADG label required

HAZCHEM

No further relevant information available.

UN Number

Not applicable

Proper shipping name

Not applicable

Transport hazard class

Not applicable

Packing group

Not applicable

Environmental hazard

Not applicable

Special precautions for users

Not applicable

Additional information

Not applicable

15. Regulatory Information

No information provided.

16. Other Information

SDS preparation date

12 June 2025

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.This Safety Data Sheet (SDS) has been prepared in compliance with the Preparation of Safety Data Sheets for Hazardous Chemicals Code of Practice February 2016. It is the user's responsibility to determine the suitability of this information for adoption of necessary safety precautions. The information published in this SDS has been compiled from the publications listed in Section 16: to the best of our ability and knowledge these publications are considered accurate. We reserve the right to revise Safety Data Sheets as new information becomes available. Copies may be made for non-profit use.