Benzoyl Peroxide, Powder

1. Identification

Product Identifiers

Product Name

Benzoyl Peroxide, Powder

Other Names

Not available.

Product Number(s)

BENZ. PEROXIDE

CAS Number

Not available

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)

• Hazard-determining components of labelling:
• dibenzoyl peroxide
• dibutyl phthalate
• Hazard statements
• Unstable explosive.
• Heating may cause a fire.
• Causes serious eye irritation.
• May cause an allergic skin reaction.
• May damage fertility or the unborn child

Precautionary Statement(s)

• Obtain special instructions before use.
• Do not handle until all safety precautions have been read and understood.
• Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
• Keep/Store away from clothing/combustible materials.
• Keep only in original container.
• Avoid breathing dust/fume/gas/mist/vapours/spray
• Wash thoroughly after handling.
• Contaminated work clothing must not be allowed out of the workplace.
• Wear protective gloves/protective clothing/eye protection/face protection.
• Wear personal protective equipment/face protection.
• If on skin: Wash with plenty of water.
• 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).
• If skin irritation or rash occurs: Get medical advice/attention.
• If eye irritation persists: Get medical advice/attention.
• Wash contaminated clothing before reuse.
• Explosion risk in case of fire.
• DO NOT fight fire when fire reaches explosives.
• Evacuate area.
• Store in accordance with local/regional/national/international regulations.
• Store locked up.
• Protect from sunlight.
• Store at temperatures not exceeding 70°F. Keep cool.
• Store away from other materials.
• Dispose of contents/container in accordance with local/regional/national/international regulations

Primary route(s) of entry

Human Health

Inhalation

If exposed or concerned: Get medical advice/attention.

Ingestion

If exposed or concerned: Get medical advice/attention.

Eyes

Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice/attention.

Skin

Wash with plenty of water. If skin irritation or rash occurs: Get medical advice/attention. Wash contaminated clothing before reuse.

Environment

3. Composition / Information on Ingredients

4. First Aid Measures

Ingestion

Clean mouth with water and drink afterwards plenty of water. If a person vomits when lying on his back, place him in the recovery position. Do NOT induce vomiting. If swallowed, seek medical advice immediately and show this container or label.

Inhalation

Supply fresh air. No adverse effects are anticipated from inhalation. If breathed in, move person into fresh air. If not breathing, give artificial respiration. Call a physician immediately

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 extinguishing methods suitable to surrounding conditions. Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
• ** Unsuitable extinguishing agents: High volume water jet.
• Cool closed containers exposed to fire with water spray.
• Do not allow run-off from fire fighting to enter drains or water courses.

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

Wear protective gloves and glasses. Wear respiratory protection. Wear personal protective equipment.

Environmental precautions

• Do not allow to enter sewers/ surface or ground water. Avoid subsoil penetration.
• Do not allow material to contaminate ground water system.
• Do not contaminate the water. If the product contaminates rivers and lakes or drains inform respective authorities. Do not let product enter drains

Methods and materials for containment and clean up

• Dispose of contaminated material as waste according to item 13.
• Ensure adequate ventilation.
• Remove mechanically and with care (e.g., with a clean polyethylene plastic shovel).
• Soak up inert absorbent material (e.g., sand, silica gel, acid binder, universal binder, sawdust).
• Never add other substances or waste material to product residue.
• Offer surplus and non-recyclable solutions to a licensed disposal company.

7. Handling and Storage

Precautions for safe handling

• Ensure good ventilation/exhaustion at the workplace.
• Open and handle the receptacle with care.
• Prevent formation of aerosols
• Protect from heat.
• Keep respiratory protective device available.

Conditions for safe storage

• Keep container tightly sealed.
• Protect from heat and direct sunlight

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.
• Store protective clothing separately.
• 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. Selection of the glove material on consideration of the penetration times, rates of diffusion and the degradation. The exact break through time has to be found out by the manufacturer or the protective gloves and has to be observed.

Body protection

Protective clothing.

Respiratory protection

In case of brief exposure or low pollution use respiratory filter device. In case of intensive or longer exposure use self-contained respiratory protective device.

9. Physical and Chemical Properties

General information

Appearance

White paste

Odour

Mild

pH

Not determined

Vapour Pressure

Not determined

Density

at 20 °C: 1.2025 g/cm³

Boiling Point

100 °C

Melting Point

Not determined

Solubility

Not miscible or difficult to mix.

Specific Gravity of Density

Not determined

Flash Point

Not determined

Flammable (Explosive) Limits

Product does not present an explosion hazard.

Ignition Temperature

Product is not selfigniting.

Formula

• Solvent content:
• Water: 30.0 %
• VOC (EC) 0.00 %
• Solids content: 60.0 %

10. Stability and Reactivity

Reactivity

No further relevant information available.

Chemical stability

No decomposition if used according to specifications.

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

• 84-74-2 dibutyl phthalate
• Oral LD50 8,000 mg/kg (rat)
• Dermal LD50 20,000 mg/kg (rabbit)

Eye contact

Causes eye irritation.

Skin contact

Sensitisation possible through skin contact

Ingestion

No further relevant information is available.

Inhalation

No further relevant information available.

Toxicity and irritation

Irritant

12. Ecological Information

Ecotoxicity

Toxic for fish.

Persistence and degradability

No further relevant information available.

Bioaccumulative potential

No further relevant information available.

Other adverse effects

• Water hazard class 3: Extremely hazardous for water.
• Do not allow the product to reach ground water, water course or sewage system, even in small quantities.
• Danger to drinking water if even extremely small quantities leak into the ground.
• Also poisonous for fish and plankton in water bodies.
• Toxic for aquatic organisms.

13. Disposal Considerations

General information

14. Transport Information

ADG label required

HAZCHEM

No further relevant information available.

UN Number

UN3106

Proper shipping name

ORGANIC PEROXIDE TYPE D, SOLID

Transport hazard class

• Class 5.2 Organic peroxides.
• Label 5.2±1

Packing group

• ADG II
• IMDGT, IATA III

Environmental hazard

• Environmental hazard: Not applicable.
• Marine pollutant: Yes (DOT)

Special precautions for users

• Warning: Organic peroxides.
• EMS Number: F-J,S-R
• Stowage Category: D
• Stowage Code: SW1 protected from sources of heat.
• Segregation Code:
• SG1 For packages carrying a subsidiary risk of class 1, segregation as for class 1, division 1.3. However, in relation to goods of class 1, segregation as for the primary hazard.
• SG35 Stow "separated from" acids.
• SG36 Stow "separated from" alkalis.

Additional information

• Limited quantities (LQ) 500g
• Excepted quantities (EQ) Code: E0
• ** Not permitted as Excepted Quantity.

15. Regulatory Information

Poisons Schedule Number

• 94-36-0 dibenzoyl peroxide S2, S4, S5
• 84-74-2 dibutyl phthalate S10

Other Information

A Chemical Safety Assessment has not been carried out.

16. Other Information

SDS preparation date

24 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.

References

-EMS SDS HISTOCRYL BENZOYL PEROXIDE CATALYST https://www.emsdiasum.com/docs/technical/msds/14390C.pdf 22/11/2021