4,5-Dimethyl thiazole（CAS#3581-91-7）

Molecular Formula	C5H7NS
Molar Mass	113.18
Density	1.07 g/mL at 25 °C (lit.)
Melting Point	83-84 C
Boling Point	158 °C/742 mmHg (lit.)
Flash Point	124°F
JECFA Number	1035
Vapor Presure	3.46mmHg at 25°C
Appearance	Crystalline powder
Specific Gravity	1.070
BRN	105694
pKa	pK1:3.73 (25°C,μ=0.1)
Storage Condition	Sealed in dry,Room Temperature
Refractive Index	n20/D 1.521(lit.)
MDL	MFCD00005336
Physical and Chemical Properties	Density 1.07 boiling point 158 ° C. (742 torr) refractive index 1.52-1.522 flash point 51°C
Use	Used as a food additive

Product Detail

Risk Codes	R10 – Flammable R22 – Harmful if swallowed R37/38 – Irritating to respiratory system and skin. R41 – Risk of serious damage to eyes R36/37/38 – Irritating to eyes, respiratory system and skin.
Safety Description	S16 – Keep away from sources of ignition. S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S39 – Wear eye / face protection. S37/39 – Wear suitable gloves and eye/face protection S36/37/39 – Wear suitable protective clothing, gloves and eye/face protection.
UN IDs	UN 1993 3/PG 3
WGK Germany	3
RTECS	XJ4380000
HS Code	29349990
Hazard Class	3
Packing Group	III

Introduction

4,5-Dimethylthiazole is an organic compound. Here are some of its properties, uses, manufacturing methods, and safety information:

Quality:

- Appearance: Colorless liquid or crystalline solid.

- Solubility: Soluble in many organic solvents such as alcohols, ethers and ketones.

- Stability: It is relatively stable at room temperature.

Use:

- It can also be used as a rubber accelerator and rubber vulcanizing agent to improve the mechanical properties of rubber.

Method:

- 4,5-Dimethylthiazole can be produced by the reaction of dimethyl sodium dithiolate and 2-bromoacetone.

- Reaction equation: 2-bromoacetone + dimethyl dithiolate → 4,5-dimethylthiazole + sodium bromide.

Safety Information:

- 4,5-Dimethylthiazole is an organic compound and should be avoided with appropriate handling measures.

- Protective gloves, goggles and gown are required during use.

- Avoid inhaling its vapours and ensure operation in a well-ventilated environment.

- In case of accidental splashing in the eyes, rinse immediately with plenty of water and seek medical attention promptly.

- Store 4,5-dimethylthiazole in a cool, dry place away from oxidants and strong acids.

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Next: Furfuryl methyl sulfide（CAS#1438-91-1）

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