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Home> Hot Product Listed R   > Retinol


CAS No.:68-26-8
Molecular Weight:286.452
Molecular Formula:C20H30O (Products with the same molecular formula)
MOL File:68-26-8.mol
yellow to orange crystalline solid
0.954 g/cm3
Melting Point
Boiling Point
Refractive Index
Flash Point
Practically insoluble in water or glycerol; soluble in absolute alcohol, methanol, chloroform, ether, fats and oils
Sol in ethanol and acetone and benzene
yellow to orange
Stable, but light and air sensitive. Incompatible with strong acids, strong oxidizing agents.
Storage temp
Spectral properties
Index of refraction: 1.6410 at 20 deg C/D (calculated form refractive indexes of 20-70% solutions in mineral oil); max absorption: 324-325 nm (E=1,835, 1%, 1 cm)
IR: 16101 (Sadtler Research Laboratories Prism Collection)
MASS: 68282 (NIST/EPA/MSDC Mass Spectral Database 1990 version)
IR: 16101 (Sadtler Research Laboratories IR prism collection)
Safety and Handling
Hazard Codes
Xn; F; N
Risk Statements
Safety Statements

Moderately toxic by ingestion. Human teratogenic effects by ingestion: developmental abnormalities of the craniofacial area and urogenital system. An experimental teratogen. Experimental reproductive effects. Human mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazard Codes:?XnNF
Risk Statements: 22-38-67-65-62-51/53-48/20-11?
R22: Harmful if swallowed
R38: Irritating to skin
R67: Vapours may cause drowsiness and dizziness
R65: Harmful: may cause lung damage if swallowed
R62: Risk of impaired fertility
R51/53: Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
R48/20: Harmful: danger of serious damage to health by prolonged exposure through inhalation
R11: Highly flammable
Safety Statements: 36/37-61-62?
S36/37: Wear suitable protective clothing and gloves
S61: Avoid release to the environment. Refer to special instructions / safety data sheets
S62: If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label
RIDADR: UN 1208 3/PG 2
WGK Germany: 3
RTECS: VH6750000
F: 8-10-16-23?
F 8: Photosensitive
F 10: Keep under argon
F 16: Decomposes easily
F 23: Sensitive to air

UN 1208 3/PG 2
There are many types of preparations that contain retinol. These include solutions of pure synthetic retinol and concentrates that contain both retinol and vitamin D in various proportions. Vitamin A capsules contain 3 to 15 mg of retinol (10,000 to 50,000 USP vitamin A units) per capsule: tablets are also available. A water-miscible preparation (15 mg/ml; 50,000 USP units/ml) can be given intramuscularly. Tretinoin (all-trans-retinoic acid; RETIN-A) is available for topical use as a solution (0.05%), a cream (0.05 and 0.1%), and a gel (0.025 and 0.01%). Isotretinoin (13-cis-retinoic acid; ACCUTANE) is available for oral use as 10, 20, and 40 mg capsules.
Exposure Standards and Regulations
Vitamin A palmitate used as a nutrient and/or dietary supplement in animal drugs, feeds, and related products is generally recognized as safe when used in accordance with good manufacturing or feeding practice. /Vitamin A Palmitate/

?Vitamin A?(CAS NO.68-26-8) is also called as Retinol [INN:BAN] ; (all-E)-3,7-Dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-nonatetraen-1-ol ; 2,4,6,8-Nonatetraen-1-ol, 3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, (all-E)- ; 3,7-Dimethyl-9-(2,6,6-trimethyl-1-cyclchexen-1-yl)-2,4,6,8-nonatetraen-1-ol ; 3,7-Dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-nonatetraen-1-ol, (all-E)- ; A-Mulsal ; A-Sol ; A-Vi-Pel ; A-Vitan ; ACON ; ATAV ; Afaxin ; Agiolan ; Agoncal ; Alcovit A ; All-trans retinol ; Alphalin ; Alphasterol ; Anatola ; Anatola A ; Anti-infective vitamin ; Antixerophthalmic vitamin ; Antixerophthalmisches Vitamin ; Aoral ; Apexol ; Apostavit ; Aquasol A ; Aquasynth ; Atars ; Avibon ; Avita ; Avitol ; Axerol ; Axerophthol ; Axerophtholum ; BRN 0403040 ; Bentavit A ; Biosterol ; Chocola A ; Del-VI-A ; Disatabs Tabs ; Dofsol ; Dohyfral A ; EINECS 200-683-7 ; Epiteliol ; HI-A-Vita ; HSDB 815 ; Homagenets Aoral ; Lard factor ; Myvpack ; NSC 122759 ; Nio-A-let ; Oleovitamin A ; Ophthalamin ; Plivit A ; Prepalin ; Retinol ; Retinol, all trans- ; Retinolo ; Retinolo [DCIT] ; Retinolum ; Retinolum [INN-Latin] ; Retrovitamin A ; Sehkraft A ; Solu-A ; Super A ; Testavol ; Testavol S ; UNII-81G40H8B0T ; UNII-G2SH0XKK91 ; VI-alpha ; Vaflol ; Vafol ; Veroftal ; Vi-Dom-A ; Vi-alpha ; Vi-alpha; Vi-alpha ; Vio-A ; Vitamin A alcohol (VAN) ; Vitamin A alcohol, all-trans- ; Vitamin A1 ; Vitamin A1 alcohol ; Vitamin A1 alcohol, all trans ; Vitamin A1, all-trans-?;?Wachstumsvitamin ; all-trans-Retinol ; all-trans-Retinyl alcohol ; all-trans-Vitamin A ; all-trans-Vitamin A alcohol ; 3,7-Dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-nonate-traen-1-ol ; Alcohol 9,13-dimethyl-7-(1,1,5-trimethyl-6-cyclohexen-5-yl)-7,9,11,13-nonatetraen-15-ol? .

Octanol/Water Partition Coefficient
log Kow = 5.68

Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

Disposal Methods
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.
Reach Info
This substance has been officially registered by enterprises.
ECHA (EU chemicals Management Agency) published the completed registration file as follows:
Completed registration file:
Registered as ubmitted Total tonnage band  
FULL JOINT 0_10 view >
Registered companies:
Registrant / Supplier details Latest dossier received
BASF SE 2010
more >

Download/Modify | Technical supported by For US version, EU version (23 languages) and more, please refer to


According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017


1.1 GHS Product identifier

Product name all-trans-Retinol

1.2 Other means of identification

Product number -
Other names VITAMIN A

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details


1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

2.Hazard identification

2.1 Classification of the substance or mixture

Skin sensitization, Category 1

Eye irritation, Category 2

Reproductive toxicity, Category 1B

Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 4

2.2 GHS label elements, including precautionary statements

Signal word


Hazard statement(s)

H317 May cause an allergic skin reaction

H319 Causes serious eye irritation

H360 May damage fertility or the unborn child

H413 May cause long lasting harmful effects to aquatic life

Precautionary statement(s)

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

P272 Contaminated work clothing should not be allowed out of the workplace.

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P264 Wash ... thoroughly after handling.

P201 Obtain special instructions before use.

P202 Do not handle until all safety precautions have been read and understood.

P273 Avoid release to the environment.


P302+P352 IF ON SKIN: Wash with plenty of water/...

P333+P313 If skin irritation or rash occurs: Get medical advice/attention.

P321 Specific treatment (see ... on this label).

P362+P364 Take off contaminated clothing and wash it before reuse.

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

P337+P313 If eye irritation persists: Get medical advice/attention.

P308+P313 IF exposed or concerned: Get medical advice/ attention.


P405 Store locked up.


P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification


3.Composition/information on ingredients

3.1 Substances

Chemical name Common names and synonyms CAS number EC number Concentration
all-trans-Retinol all-trans-Retinol 68-26-8 none 100%

4.First-aid measures

4.1 Description of necessary first-aid measures

General advice

Consult a physician. Show this safety data sheet to the doctor in attendance.

If inhaled

If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.

In case of skin contact

Wash off with soap and plenty of water. Consult a physician.

In case of eye contact

Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.

If swallowed

Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

4.2 Most important symptoms/effects, acute and delayed

SYMPTOMS: Symptoms of chronic overdose include fatigue, malaise, lethargy, abdominal discomfort, anorexia and vomiting. Skeletal effects include slow growth, hard tender cortical thickening over the radius and tibia, migratory arthralgia and premature closing of the epiphysis. Central nervous system effects include irritability, headache and increased intracranial pressure as manifested by bulging fontanels, papilledema and exophthalmos. Dermatologic effects include fissures of the lips, drying and cracking of the skin, alopecia, scaling, massive desquamation and increased pigmentation. Systemic effects include hypomenorrhea, hepatosplenomegaly, jaundice, leukopenia and vitamin A plasma level over 1200 units. Other effects include painful nodular periosteal swelling, osteoporosis, itching, skin eruptions, ulcerations, drowsiness, alopecia, liver enlargement, diplopia and papilledema. ACUTE/CHRONIC HAZARDS: When heated to decomposition, this compound emits toxic fumes of carbon monoxide and carbon dioxide. It is harmful if swallowed, inhaled or absorbed through the skin.

4.3 Indication of immediate medical attention and special treatment needed, if necessary

Hypervitaminosis A is treated by withdrawing vitamin A and instituting symptomatic and supportive treatment. Some signs and symptoms disappear within 1 week, while others may persist for several weeks to months.

5.Fire-fighting measures

5.1 Extinguishing media

Suitable extinguishing media

Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher.

5.2 Specific hazards arising from the chemical

Flash point data for this chemical are not available. It is probably combustible.

5.3 Special protective actions for fire-fighters

Wear self-contained breathing apparatus for firefighting if necessary.

6.Accidental release measures

6.1 Personal precautions, protective equipment and emergency procedures

Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8.

6.2 Environmental precautions

Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided.

6.3 Methods and materials for containment and cleaning up

Pick up and arrange disposal. Sweep up and shovel. Keep in suitable, closed containers for disposal.

7.Handling and storage

7.1 Precautions for safe handling

Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.

7.2 Conditions for safe storage, including any incompatibilities

Vitamin A is unstable in, and should be protected from, air and light. Vitamin A preparations should be stored at a temperature less than 40\u00b0C, preferably between 15-30\u00b0C. Oral vitamin A preparations should be stored in tight, light-resistant containers and the injection should be protected from light and freezing.

8.Exposure controls/personal protection

8.1 Control parameters

Occupational Exposure limit values

no data available

Biological limit values

no data available

8.2 Appropriate engineering controls

Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.

8.3 Individual protection measures, such as personal protective equipment (PPE)

Eye/face protection

Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).

Skin protection

Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.

Respiratory protection

Wear dust mask when handling large quantities.

Thermal hazards

no data available

9.Physical and chemical properties

Physical state yellow to orange crystalline solid
Colour Solvated crystals from polar solvents, such as methanol or ethyl formate
Odour no data available
Melting point/ freezing point 62-64\u00baC
Boiling point or initial boiling point and boiling range 137-138
Flammability no data available
Lower and upper explosion limit / flammability limit no data available
Flash point 147.3\u00baC
Auto-ignition temperature no data available
Decomposition temperature no data available
pH no data available
Kinematic viscosity no data available
Solubility Practically insoluble
Partition coefficient n-octanol/water (log value) no data available
Vapour pressure 7.35E-09mmHg at 25\u00b0C
Density and/or relative density 0.954 g/cm3
Relative vapour density no data available
Particle characteristics no data available

10.Stability and reactivity

10.1 Reactivity

no data available

10.2 Chemical stability

Free alcohol is sensitive to air-oxidation, but oil solutions of it are quite stable; UV light inactivates Vitamin A.

10.3 Possibility of hazardous reactions

VITAMIN A is light sensitive. Also air sensitive and heat sensitive. Reacts with strong oxidizing agents. Also can react with acids . Can react exothermically with reducing agents to release hydrogen gas.

10.4 Conditions to avoid

no data available

10.5 Incompatible materials

no data available

10.6 Hazardous decomposition products

no data available

11.Toxicological information

Acute toxicity

  • Oral: LD50 Mouse oral 2570 mg/kg (10 day)
  • Inhalation: no data available
  • Dermal: no data available

Skin corrosion/irritation

no data available

Serious eye damage/irritation

no data available

Respiratory or skin sensitization

no data available

Germ cell mutagenicity

no data available


no data available

Reproductive toxicity

no data available

STOT-single exposure

no data available

STOT-repeated exposure

no data available

Aspiration hazard

no data available

12.Ecological information

12.1 Toxicity

  • Toxicity to fish: no data available
  • Toxicity to daphnia and other aquatic invertebrates: no data available
  • Toxicity to algae: no data available
  • Toxicity to microorganisms: no data available

12.2 Persistence and degradability

no data available

12.3 Bioaccumulative potential

no data available

12.4 Mobility in soil

no data available

12.5 Other adverse effects

no data available

13.Disposal considerations

13.1 Disposal methods


The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.

Contaminated packaging

Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.

14.Transport information

14.1 UN Number

ADR/RID: Not dangerous goods. IMDG: Not dangerous goods. IATA: Not dangerous goods.

14.2 UN Proper Shipping Name

ADR/RID: unknown
IMDG: unknown
IATA: unknown

14.3 Transport hazard class(es)

ADR/RID: Not dangerous goods. IMDG: Not dangerous goods. IATA: Not dangerous goods.

14.4 Packing group, if applicable

ADR/RID: Not dangerous goods. IMDG: Not dangerous goods. IATA: Not dangerous goods.

14.5 Environmental hazards

ADR/RID: no IMDG: no IATA: no

14.6 Special precautions for user

no data available

14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code

no data available

15.Regulatory information

15.1 Safety, health and environmental regulations specific for the product in question

Chemical name Common names and synonyms CAS number EC number
all-trans-Retinol all-trans-Retinol 68-26-8 none
European Inventory of Existing Commercial Chemical Substances (EINECS) Listed.
EC Inventory Listed.
United States Toxic Substances Control Act (TSCA) Inventory Listed.
China Catalog of Hazardous chemicals 2015 Not Listed.
New Zealand Inventory of Chemicals (NZIoC) Listed.
Philippines Inventory of Chemicals and Chemical Substances (PICCS) Listed.
Vietnam National Chemical Inventory Not Listed.
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) Listed.

16.Other information

Information on revision

Creation Date Aug 16, 2017
Revision Date Aug 16, 2017

Abbreviations and acronyms

  • CAS: Chemical Abstracts Service
  • ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
  • RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
  • IMDG: International Maritime Dangerous Goods
  • IATA: International Air Transportation Association
  • TWA: Time Weighted Average
  • STEL: Short term exposure limit
  • LC50: Lethal Concentration 50%
  • LD50: Lethal Dose 50%
  • EC50: Effective Concentration 50%


  • IPCS - The International Chemical Safety Cards (ICSC), website:
  • HSDB - Hazardous Substances Data Bank, website:
  • IARC - International Agency for Research on Cancer, website:
  • eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website:
  • CAMEO Chemicals, website:
  • ChemIDplus, website:
  • ERG - Emergency Response Guidebook by U.S. Department of Transportation, website:
  • Germany GESTIS-database on hazard substance, website:
  • ECHA - European Chemicals Agency, website:

Disclaimer: The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. We as supplier shall not be held liable for any damage resulting from handling or from contact with the above product.

Precursor and Product
Computational chemical data

Molecular Weight:286.4516 [g/mol]
Molecular Formula:C20H30O
H-Bond Donor:1
H-Bond Acceptor:1
Rotatable Bond Count:5
Exact Mass:286.229666
MonoIsotopic Mass:286.229666
Topological Polar Surface Area:20.2
Heavy Atom Count:21
Formal Charge:0
Isotope Atom Count:0
Defined Atom Stereocenter Count:0
Undefined Atom Stereocenter Count:0
Defined Bond Stereocenter Count:4
Undefined Bond Stereocenter Count:0
Covalently-Bonded Unit Count:1
Feature 3D Acceptor Count:1
Feature 3D Donor Count:1
Feature 3D Hydrophobe Count:3
Feature 3D Ring Count:1
Effective Rotor Count:5.8
Conformer Sampling RMSD:0.8
CID Conformer Count:30

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