4,5-Dimethylthiazole
- Product Name
- 4,5-Dimethylthiazole
- CAS No.
- 3581-91-7
- Chemical Name
- 4,5-Dimethylthiazole
- Synonyms
- Thiazole, 4,5-dimethyl-;FEMA 3274;FEMA NUMBER 3274;4,5-dimethyl-thiazol;2,2-Dimethylthiazole;4,5-DIMETHYLTHIAZOLE;4,5-Dimethylthiazole>4,5-Dimethylthiazole,98%;4,5-DIMETHYL-1,3-THIAZOLE;4,5-Dimethylthiazole ,99%
- CBNumber
- CB3246371
- Molecular Formula
- C5H7NS
- Formula Weight
- 113.18
- MOL File
- 3581-91-7.mol
4,5-Dimethylthiazole Property
- Melting point:
- 83-84 C
- Boiling point:
- 158 °C/742 mmHg (lit.)
- Density
- 1.07 g/mL at 25 °C (lit.)
- refractive index
- n20/D 1.521(lit.)
- FEMA
- 3274 | 4,5-DIMETHYLTHIAZOLE
- Flash point:
- 124 °F
- storage temp.
- Sealed in dry,Room Temperature
- form
- solid
- pka
- pK1:3.73 (25°C,μ=0.1)
- Specific Gravity
- 1.070
- Odor
- at 0.10 % in dipropylene glycol. roasted nutty fishy green boiled shrimp
- Odor Type
- fishy
- JECFA Number
- 1035
- BRN
- 105694
- LogP
- 2.09
- CAS DataBase Reference
- 3581-91-7(CAS DataBase Reference)
- NIST Chemistry Reference
- Thiazole, 4,5-dimethyl-(3581-91-7)
Safety
- Hazard Codes
- Xn,Xi,F
- Risk Statements
- 10-22-37/38-41-36/37/38
- Safety Statements
- 16-26-39-37/39-36/37/39
- RIDADR
- UN 1993 3/PG 3
- WGK Germany
- 3
- RTECS
- XJ4380000
- HazardClass
- 3
- PackingGroup
- III
- HS Code
- 29349990
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H226Flammable liquid and vapour
H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
H335May cause respiratory irritation
- Precautionary statements
-
P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233Keep container tightly closed.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- W327409
- Product name
- 4,5-Dimethylthiazole
- Purity
- ≥97%, FG
- Packaging
- sample
- Price
- $89.3
- Updated
- 2024/03/01
- Product number
- D2142
- Product name
- 4,5-Dimethylthiazole
- Purity
- >98.0%(GC)
- Packaging
- 5g
- Price
- $26
- Updated
- 2024/03/01
- Product number
- D2142
- Product name
- 4,5-Dimethylthiazole
- Purity
- >98.0%(GC)
- Packaging
- 25g
- Price
- $79
- Updated
- 2024/03/01
- Product number
- A10785
- Product name
- 4,5-Dimethylthiazole, 98%
- Packaging
- 5g
- Price
- $25.65
- Updated
- 2024/03/01
- Product number
- A10785
- Product name
- 4,5-Dimethylthiazole, 98%
- Packaging
- 25g
- Price
- $105.65
- Updated
- 2024/03/01
4,5-Dimethylthiazole Chemical Properties,Usage,Production
Chemical Properties
4,5-Dimethylthiazole is a colorless to light yellow liquid that has a roasted nutty, meaty, boiled poultry-like odor.
Occurrence
Reported found in peanuts, toasted oats, malt, peach, pork, coffee, krill, shrimp and scallops
Uses
4,5-Dimethylthiazole was used in the preparation of 4-(bromomethyl)-5-(dibromomethyl)thiazole.
Preparation
From methyl-α-bromoethyl ketone; by oxidation of 2-mercaptothiazoles with hydrogen peroxide in aqueous solution; from 2-mercapto-4,5-dimethylthiazole.
Definition
ChEBI: 4,5-Dimethylthiazole is a member of thiazoles.
Aroma threshold values
Detection: 470 ppb
Taste threshold values
Taste characteristics at 5 ppm: fishy, amine and pyridine-like with shrimp and savory nuances
Synthesis Reference(s)
The Journal of Organic Chemistry, 6, p. 764, 1941 DOI: 10.1021/jo01205a011
General Description
4,5-Dimethylthiazole is a thiazoles compounds that containing a thiazole ring substituted at positions 4 and 5 only. Radical bromination of 4,5-dimethylthiazole using N-bromosuccinimide in the presence of 2,2′-azobisisobutyronitrile yields mono-, tri- and tetrabromo compounds.
4,5-Dimethylthiazole Preparation Products And Raw materials
Raw materials
Preparation Products
4,5-Dimethylthiazole Suppliers
View Lastest Price from 4,5-Dimethylthiazole manufacturers
- Product
- 4,5-Dimethylthiazole 3581-91-7
- Price
- US $32.00-1.10/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- g-kg-tons, free sample is available
- Release date
- 2024-04-22
- Product
- 4,5-Dimethylthiazole 3581-91-7
- Price
- US $0.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 98%
- Supply Ability
- 1ton
- Release date
- 2022-10-08
- Product
- 4,5-Dimethylthiazole 3581-91-7
- Price
- US $15.00-10.00/KG
- Min. Order
- 1KG
- Purity
- 99%+ HPLC
- Supply Ability
- Monthly supply of 1 ton
- Release date
- 2021-07-10