Chemical Product Identification & Regulatory Data
Official chemical identifiers, CAS numbers, and regulatory compliance information
Basic Product Information
Regulatory Identifiers
Chemical Abstracts Service registry number - unique identifier for chemical substances
European Community number - used for regulatory compliance in EU/EEA
Registration, Evaluation, Authorisation and Restriction of Chemicals - EU regulation compliance
Uses Information
Overview
Hydroquinone (CAS: 123-31-9 ) is a crystalline powder substance commonly used su24 scientific research and development.
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GHS Hazard Classification & Safety Warnings
Globally Harmonized System (GHS) hazard pictograms, signal words, and safety classifications
Classification Status
Signal Word
Hazard Classifications
GHS Hazard Pictograms & Safety Symbols
GHS07
GHS05
GHS08
GHS (Globally Harmonized System) pictograms indicate specific chemical hazard categories and safety precautions
Hazard Statements
- H302: Harmful if swallowed.
- H317: May cause an allergic skin reaction.
- H318: Causes serious eye damage.
- H341: Suspected of causing genetic defects.
- H351: Suspected of causing cancer.
Precautionary Statements
- P273: Avoid release to the environment.
- P280: Wear protective gloves/protective clothing/eye protection/face protection.
- P305+P351+P338: If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Chemical Manufacturers & Supply Chain
Authorized suppliers, manufacturers, and distribution network information
Alfa Aesar Thermo Fisher Scientific Chemicals, Inc.
manufacturer
24/7 Emergency Response & Poison Control
Critical emergency contact numbers for chemical spills, exposure incidents, and medical emergencies
Emergency Contact
(800) 343-0660
During normal business hours (Monday-Friday, 8am-7pm EST)
Emergency Contact
Carechem
Chemical Composition & Hazardous Ingredients
Detailed component analysis, concentration ranges, and hazardous substance identification
Product Type
substanceGeneral Composition
Chemical characterization: Substances
Chemical Components & Hazardous Substances
| Chemical Name | CAS Number | Concentration | Hazardous |
|---|---|---|---|
| HYDROQUINONE EC: 204-617-8 | 123-31-9 | 100% | ✓ Non-hazardous |
Emergency First Aid Measures
Critical first aid procedures for chemical exposure incidents and medical emergencies
🫁 Inhalation Exposure
Supply fresh air. If required, provide artificial respiration. Keep patient warm.
🖐️ Skin Contact
Immediately wash with water and soap and rinse thoroughly.
Symptoms:
May cause an allergic skin reaction.
👁️ Eye Contact
Rinse opened eye for several minutes under running water. Then consult a doctor.
Symptoms:
Causes serious eye damage.
🍽️ Ingestion/Swallowing
Seek medical treatment.
Symptoms:
Harmful if swallowed.
Related Chemical Substances & Alternative Products
Similar chemicals with comparable safety profiles and industrial applications
Technical Specifications & Material Properties
Physical state, chemical properties, melting point, boiling point, and material characteristics
Exposure Controls & Personal Protective Equipment (PPE)
Occupational exposure limits, engineering controls, and required safety equipment
🏭 Engineering Controls
Properly operating chemical fume hood designed for hazardous chemicals and having an average face velocity of at least 100 feet per minute.
🧤 Hand Protection
Impervious gloves. Check protective gloves prior to each use for their proper condition. The selection of suitable gloves not only depends on the material, but also on quality. Quality will vary from manufacturer to manufacturer. Material of gloves Nitrile rubber, NBR. Penetration time of glove material (in minutes) 480. Glove thickness: 0.11 mm.
👁️ Eye Protection
Tightly sealed goggles. Safety glasses with side shields / NIOSH (US) or EN 166(EU).
😷 Respiratory Protection
Use suitable respirator when high concentrations are present. Recommended filter device for short term use: Use a respirator with type P100 (USA) or P3 (EN 143) cartridges as a backup to engineering controls. Risk assessment should be performed to determine if air-purifying respirators are appropriate. 'Only use equipment tested and approved under appropriate government standards.
🦺 Skin/Body Protection
Protective work clothing.
Transportation & Shipping Information
UN numbers, shipping names, transport classes, and regulatory transport requirements
🏷️ UN Number
UN3077
📦 Proper Shipping Name
Environmentally hazardous substances, solid, n.o.s. (Hydroquinone)
⚠️ Transport Hazard Class
9
📋 Packing Group
III
🚛 ADR Transport Precautions
Warning: Miscellaneous dangerous substances and articles
Chemical Safety FAQ & Common Questions
Most frequently asked questions about safety, handling, storage, and regulatory compliance
What other names is Hydroquinone known by?
Hydroquinone is also known as: 1,4-dihydroxybenzene
What is the hazard signal word for Hydroquinone?
The signal word for this substance is "danger".
What is the physical form of Hydroquinone?
Hydroquinone is a crystalline powder appearing as crystalline powder . It has odorless odor.
What is Hydroquinone used for?
SU24 Scientific research and development
What are the hazard statements for Hydroquinone?
This substance has 5 hazard statements: H302: Harmful if swallowed. H317: May cause an allergic skin reaction. H318: Causes serious eye damage. H341: Suspected of causing genetic defects. H351: Suspected of causing cancer.
What is the melting point of Hydroquinone?
The melting point is 170-172 ℃ (338-342 °F) and the boiling point is 285-287 ℃ (545-549 °F).