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ChemicalBook >>2-Hydroxy-1,4-naphoquinone>>2-Hydroxy-1,4-naphoquinone(83-72-7)

2-Hydroxy-1,4-naphoquinone(83-72-7)

2-Hydroxy-1,4-naphoquinone(83-72-7)
Product IdentificationBack to Contents
【Product Name】

2-Hydroxy-1,4-naphoquinone
【Synonyms】

1,4-Dihydro-1,4-dioxo-2-hydroxynaphthalene
2-Hydroxy-1,4-naphthalenedione
2-Hydroxynaphthoquinone
Flower of Paradise
Lawsone
Natural Orange 6
Tetrabromozirconium
Zirconium bromide
Zirconium tetrabromide
【CAS】

13777-25-8
【CAS】

83-72-7
【Formula】

Br4Zr
【Formula】

C10H6O3
【Molecular Weight】

410.84
【Molecular Weight】

174.16
【EINECS】

201-496-3
【EINECS】

237-417-4
【RTECS】

QL8200000
【RTECS Class】

Drug; Mutagen
【Merck】

13,5410
【Beilstein/Gmelin】

1565260
【Beilstein/Gmelin】

2598 (G)
【Beilstein Reference】

4-08-00-02360
Physical and Chemical PropertiesBack to Contents
【Appearance】

White cubic crystals
【Appearance】

Yellow prisms or yellow powder.
【Melting Point】

450
【Melting Point】

192
【Density】

1.46 g/cm3 (25 C)
【pKa/pKb】

4.03 (pKa)
【Partition Coefficient】

1.78
【Usage】

Dye.
First Aid MeasuresBack to Contents
【Ingestion】

If swallowed, wash out mouth with water provided person is conscious. Call a physician.
【Ingestion】

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
【Ingestion】

See Inhalation.
【Inhalation】

TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
【Inhalation】

If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
【Inhalation】

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
【Skin】

Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
【Skin】

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
【Skin】

Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
【Eyes】

See Inhalation.
【Eyes】

Assure adequate flushing of the eyes by separating the eyelids with fingers.
【Eyes】

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Handling and StorageBack to Contents
【Storage】

Keep tightly closed. Store in a cool dry place.
【Storage】

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
【Handling】

Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Hazards IdentificationBack to Contents
【Ingestion】

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated.
【Inhalation】

May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
【Skin】

May cause skin irritation. The toxicological properties of this material have not been fully investigated.
【Eyes】

May cause eye irritation. The toxicological properties of this material have not been fully investigated.
【Hazards】

Emits toxic fumes under fire conditions.
【EC Risk Phrase】

20/21/22 34
【EC Risk Phrase】

R 36/37/38
【EC Safety Phrase】

S 26 36
【EC Safety Phrase】

22 26 27 36/37/39 45
【UN (DOT)】

3260
Exposure Controls/Personal ProtectionBack to Contents
【Personal Protection】

Eyes: 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: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
【Personal Protection】

Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing. Faceshield (8-inch minimum).
【Respirators】

Wear positive pressure self-contained breathing apparatus (SCBA).
【Respirators】

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
【Exposure Effects】

Corrosive. Causes burns. Harmful by inhalation, in contact with skin and if swallowed.
Fire Fighting MeasuresBack to Contents
【Flash Point】

192
【Fire Fighting】

Extinguish using Dry chemical powder. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
【Fire Fighting】

Wear a 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. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
【Fire Potential】

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Accidental Release MeasuresBack to Contents
【Small spills/leaks】

Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Provide ventilation.
【Small spills/leaks】

Cover with dry lime or soda ash, pick up, keep in a closed container, and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.
Stability and ReactivityBack to Contents
【Incompatibilities】

Acids.
【Incompatibilities】

Oxidizing agents.
【Stability】

Stable under normal temperatures and pressures.
【Decomposition】

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
【Decomposition】

Hydrogen bromide gas.
【Combustion Products】

Fire may produce irritating, corrosive and/or toxic gases.
Transport InformationBack to Contents
【UN Number】

3260
【Hazard Class】

8
【Packing Group】

II
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