Free sample 1 4-Diiodobutane CAS 628-21-7

Basic Info

Model No.: CAS NO 628-21-7

Status: Liquid Catalyst

Response Type: Polymerization

Classification: Homogeneous Catalysts

Usage: Negative Catalyst

Effect Size: Promoter Catalysts

Manufacturing Method: Mechanical Mixing

Application Industry: Physiology

CAS:: 628-21-7

Name:: 1,4-Diiodobutane

MF:: C4H8I2

MW:: 309.91500

MP:: 6 °C(lit.)

Bp:: 147-152 °C26 Mm Hg(lit.)

FP:: 108-110°C/10mm

Additional Info

Packaging:  in 25kg drum

Productivity: 10000kg per month

Brand: zhishang

Transportation: Ocean,Land,Air

Place of Origin: Shandong, China (Mainland)

Supply Ability: in stock

Certificate: ISO CE

HS Code: 628-21-7

Port: Shanghai,Tianjin,Qingdao

Product Description

Free sample 1 4-Diiodobutane CAS 628-21-7

Physicochemical properties

Appearance and traits: transparent light brown liquid, strong smell
Density: 2.35 g/mL at 25 °C (lit.)
Melting point: 6 °C (lit.)
Boiling point: 147-152 °C 26 mm Hg (lit.)
Flash point: 108-110°C/10mm
Refractive index: n20/D 1.621 (lit.)
Water solubility: insoluble
Stability: Stable under normal temperatures and pressures.
Storage conditions: Store in a cool, dry place. Do not store in direct sunlight. Store in a tightly closed container.

1. Preparation method: In a reaction flask equipped with a stirrer, a reflux condenser, and a thermometer, 32.5 g of phosphorus pentoxide and 85% of orthophosphoric acid 68 mL were added, and the mixture was cooled to room temperature with stirring. Potassium iodide 166 g (1.0 mol), 22.5 (0.25 mol) freshly distilled 1,4-butanediol are added
(2) (bp 228 to 230°C or 133 to 135°C/2.4kPa). The reaction was stirred at 100-120°C for 4 hours. Cool to room temperature, add 75 mL of water and 130 mL of ether. The ether layer was separated, decolorized by adding 25 mL (10%) of sodium thiosulfate solution, washed with cold saturated saline, and dried on an anhydrous basis. After distilling off the ether, distillation under reduced pressure and collecting fractions at 110°C/800 Pa yields 1,4-diiodobutane.
(1) 165 g, yield 84%. Note: 1 It is also possible to use THF instead of 1,4-butanediol.


Q1. Are you a manufacturer

Answer: Yes, we have our own factory called [ZhiShang Industry Group “, we export by ShandongZhishangchemical Co., Ltd. 

Q2. Do you have GMP or DMF

Answer: Yes, we have GMP certificate for some products, and we can provide DMF as well.

Q3. What information should I let you know if I want to get a quotation

Answer: -Quality you require, eg. Assay, Purity, or single impurity

-Quantity you need

-Standard you want, such as USP, EP, JP etc.

Q4. How to make the payment

Answer: Escrow and T/T in advance are highly recommended. We can accept Western Union, Money Gram and Paypal as well

Q5. When will you deliver the goods

Answer: For sample(less than 1kg), in about 3 working days after payment; for larger orders (more than 1kg), in about 7 working days after payment. 

Q6. How will you deliver the goods

Answer: We have strong cooperation with DHL, TNT, UPS, FEDEX, EMS, China Air Post. For container products, we can do sea shipping.

You also can choose your own shipping forwarder.

Product expansion

1> Cosmetic Raw Materials: Cosmetics is a variety of raw materials through a reasonable deployment of processing from the compound mixture. Cosmetics with a wide range of raw materials, different performance. According to the raw material properties and uses of cosmetics, can be divided into matrix materials and auxiliary raw materials in two categories. The former is a class of cosmetics in the main raw materials, cosmetics in the possession of a large proportion of the cosmetics play a major role in the role of the material. The latter is the formation of cosmetics, stability or to give color, smell and other characteristics of the role of these substances in the cosmetic formula is not used, but it is extremely important. Cosmetics are natural, synthetic or extracted from the role of different substances as raw materials, by heating, mixing and emulsification and other production processes processed from the chemical mixture.

2> Active Pharmaceutical Ingredients(API): API refers to the raw materials in the production of various types of preparations, which is the active ingredient in powder,crystal and paste for medicine use through chemical synthesis,plant extract, and preparations of biotechnology institute.It is one substance or mixture during the medicine making period, it can not be taken directly by patients.

3> Fragrance And Spices: Spice is a substance that can be scented by smelling or scented by taste, and is the raw material for the preparation of the fragrance. Spices are an important part of fine chemicals, it is composed of natural spices, synthetic spices and single fragrance.

4> Organic Raw Material: Intermediates are also known as organic intermediates. The use of coal tar or petroleum products as raw materials to produce dyes, pesticides, pharmaceuticals, resins, additives, and other intermediates.

5> Chemicals Used In Paints: Paint, the traditional Chinese name is paint. So-called coating is coated on the surface of the object that be protected or be adornment, and with the continuous film coating to form strong adhesion, usually in resin, or oil, or emulsion is given priority to, add or not add pigment, filler, add the corresponding additives, organic solvents or water preparation of viscous liquid.

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