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TBHQ Tertiary Butyl Hydro Quinone

Tertiary Butylhydroquinone TBHQ Pure & FCC Food Grade Suppliers, Manufacturer's Representative

CAS number : 1948-33-0
EINECS EC code number: 217-752-2
Molecular Weight: 166.22
Chemical Formula: C10H14O2

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DESCRIPTION

CAS number: 1948-33-0
EINECS EC No.: 217-752-2
Molecular formula: C10H14O2
Molecular weight: 166.22
Appearance: Tan powder
Density: 1.050 g/mL
Synonyms: Tert-Butylhydroquinone or 2-Tert-Butylhydroquinone; 2-(1,1-Dimethylethyl)-1,4-benzenediol

Specifications of TBHQ Tert Butylhydroquinone
It is a white crystalline Powder having characteristic Odor. It is soluble in alcohol and practically insoluble in water.
Test ------------------------------ Specification
Moisture (KF) --------------------- 0.5% max
t-Butyl –p-Benzo-Quinone (FTIR) --- 0.2% max
2,5Ditert-Butyl Hydroquinone (GC) - 0.2% max
Heavy Metal (as Pb) --------------- 0.2ppm max
Hydroquinone (GC) ----------------- 0.1% max
Melting Point --------------------- 126.5C & 128.5C
Toluene Content ------------------- 0.0025% max
Assay (Titrimetric) C10H14O2 ------ 99.0% of min
UV-Absorbance (Polynuclear Hydrocarbon):

280-289nm-net abs.Max.0.15
290-299nm-net abs.Max.0.12
300-359nm-net abs.Max.0.08
360-400nm-net abs.Max.0.02

Packing: 25kg in fiber drums.
Tert Butylhydroquinone (TBHQ, tertiary butylhydroquinone or tertiary butyl hydro quinone) is a highly effective antioxidant. Tertiary Butyl Hydroquinone (TBHQ) is a Synthetic food grade antioxidant, that is used to stabilize foods, fats and vegetable oils against oxidative deterioration and thus extending their storage life and hence it is used as a preservative. It does not cause discoloration even in the presence of iron, and does not change flavor or odor of the material to which it is added. It can be combined with other preservatives such as butylated hydroxyanisole (BHA). As a food additive, its E number is E319. It is added to a wide range of foods, with the highest limit (1000 mg/kg) permitted for frozen fish and fish products.

It is used industrially as a stabilizer to inhibit auto-polymerization of organic peroxides. It is also used as a corrosion inhibitor in biodiesel. In perfumery, it is used as a fixative to lower the evaporation rate and improve stability. It is also added to varnishes, lacquers, resins, and oil field additives.

Specifications of TBHQ Tert Butylhydroquinone
BHQ FCC Food Grade
tert-Butylhydroquinone; Mono-tert-butylhydroquinone
Formula: C10H14O2
Weight: 166.22
INS: 319
CAS Number: 1948-33-0

DESCRIPTION
TBHQ occurs as a white, crystalline solid. It is soluble in alcohol and in ether, but it is practically insoluble in water.
Function: Antioxidant.

REQUIREMENTS
Identification: Dissolve a few milligrams of sample in 1 mL of methanol, and add a few drops of a 25% solution of dimethylamine in water. A pink to red color appears.
Assay: Not less than 99.0% of C10H14O2.
tert-Butyl-p-benzoquinone: Not more than 0.2%.
2,5-Di-tert-butylhydroquinone: Not more than 0.2%.
Hydroquinone: Not more than 0.1%.
Lead: Not more than 2 mg/kg.
Melting Range: Between 126.5C and 128.5C.
Toluene: Not more than 0.0025%.
Ultraviolet Absorbance: (polynuclear hydrocarbons) Passes test.


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