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HomeProduct name list1,2-Hexanediol

1,2-Hexanediol

  • CAS NO.:6920-22-5
  • Empirical Formula: C6H14O2
  • Molecular Weight: 118.17
  • MDL number: MFCD00010737
  • EINECS: 230-029-6
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-11-21 15:02:05
1,2-Hexanediol Structural

What is 1,2-Hexanediol?

Description

1,2-Hexanediol is a linear aliphatic diol with a carbon chain length containing six carbons. It is a synthetic preservative and moisture-binding agent belonging to a class of agents known as higher molecular glycols. It is considered non-sensitizing. It is ideal for use as an emollient, humectant, and wetting agent in cosmetic and skin care products.

Chemical properties

clear colorless to light yellow liquid.

The Uses of 1,2-Hexanediol

1,2-Hexanediol is a solvent used to dissolve other compounds in a formulation. It can also be used in the ruthenium-catalyzed synthesis of oxazolidin-2-ones from urea. It can undergo ruthenium-hydride catalyzed dehydrative coupling with anilines to form substituted indole and quinoline products.

Preparation

1,2-Hexanediol was synthesized with an overall yield of approximately 45% using a multi-step process that involved a-bromination of caproic acid, followed by hydrolysis to a-hydroxycaproic acid, and concluded with reduction using lithium aluminum hydride. In an alternate method, the organic acid was oxidized with H2O2 to form a peroxy acid, which in turn epoxidized the olefin double bond and ultimately underwent hydrolysis to yield 1,2-hexanediol.
SYNTHESIS OF SOME HEXANEDIOLS

What are the applications of Application

1,2-Hexanediol has an antibacterial effect. Other uses are in ink-jet inks, fuel and lubricant additives.

Benefits

1,2 hexanediol is most commonly used as a solvent in skincare formulation. It pulls the moisture up from the deeper levels of the skin, as well as from the air, to help keep the top layers of your skin from drying out. This makes It very effective at keeping your skin hydrated and providing long-term moisture. It can also help to disperse pigments more evenly in makeup products and boost the antimicrobial activity of preservatives.

General Description

1,2-Hexanediol acts as cosurfactant, used for modifying the sodium dodecyl sulfate micelles. Solubility of 1,2-hexanediol in supercritical CO2 has been reported. It has a tendency of self-association to form micelle-like aggregates.

Safety

1,2-Hexanediol is safe for skin and hair when used in lower concentrations. In an in-use safety evaluation for skin irritation and sensitization potential, 28 participants (males and females) were instructed to use a body wash containing 0.15% 1,2- hexanediol for a minimum of 3 times per week over a 30-day period. There was no evidence of erythema, edema, or dryness of application sites in any of the participants, and it was concluded that the product did not demonstrate a potential for eliciting skin irritation or sensitization.
Safety Assessment of 1,2-Glycols as Used in Cosmetics

Toxicity

oral (rat): LD50 6.166 mg/kg; inhalation: dust/mist (rat) LC50 >7.015 mg/m3/4h; dermal (rat): LD50 >2.000 mg/kg. Causes serious eye irritation

Purification Methods

Fractionally distil it, preferably in a vacuum. Alternatively, dissolve it in Et2O, dry with K2CO3 then Na2SO4, filter, evaporate and distil it in a vacuum. The bis-4-nitrobenzoyl derivative has m 101.5-102.5o. [Rudloff Can J Chem 36 486 1958, Beilstein 1 I 251, 1 III 2200, 1 IV 2554.]

Properties of 1,2-Hexanediol

Melting point: 45°C
Boiling point: 223-224 °C (lit.)
alpha  [α]D20 -0.3~+0.3゜ (neat)
Density  0.951 g/mL at 25 °C (lit.)
vapor pressure  0.576Pa at 25℃
refractive index  n20/D 1.442(lit.)
Flash point: >230 °F
storage temp.  Inert atmosphere,Room Temperature
solubility  Chloroform (Slightly), Methanol (Slightly)
form  Liquid
pka 14.49±0.20(Predicted)
color  Clear colorless to light yellow
Specific Gravity 0.951
Odor at 100.00?%. bland
Water Solubility  Miscible with water, lower aliphatic hydrocarbons and fatty acids.
Sensitive  Hygroscopic
BRN  1719244
CAS DataBase Reference 6920-22-5(CAS DataBase Reference)
EPA Substance Registry System 1,2-Hexanediol (6920-22-5)

Safety information for 1,2-Hexanediol

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H319:Serious eye damage/eye irritation
Precautionary Statement Codes P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for 1,2-Hexanediol

InChIKey FHKSXSQHXQEMOK-UHFFFAOYSA-N

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