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Product Name: Industrial Isoprene  
Trade Mark: Sanren Brand  
Alternative Name: ?  
Molecular formula/Structural Formula:
Production Process: Using by-product C5 fraction from ethylene production via cracking the crude oil, the product is obtained through precise fractionation for removing the lighter and heavier fractions as well as solvent extraction. The product is divided into two grades i.e. (for) polymer and chemicals.  
Properties: The product is colorless or light yellow transparent liquid. It is inflammable and explosive with specific gravity 0.6806; melting point ?47.7℃; boiling point 34.1℃; flash point -53.89℃; spontaneous ignition :220℃; explosion limit (v/v) 1.5~9.7%.  
Grade: ?  
National Standard Grade: ?  
Enterprise Standard Grade: ?  
Specifications:

Polymer-grade isoprene: Q/SH 012.11.03-1998 (Enterprise standard).

No.

Item

Index

Testing Method

1

Appearance

colourless or light colour, transparent, no mechanical admixture

 

 

 

Q/SH 012.11.03-1998

2

Content %(m/m) >=

99.3

3

Isoprene dimer %(m/m) <=

0.3

4

Paraffins and monoene, %(m/m)

balance

5

Cyclo pentadiene, mg/kg <=

1

6

Alkyne, mg/kg <=

50

7

m-pentadiene, mg/kg <=

80

8

DMF 1), mg/kg <=

10

9

Sulphur, mg/kg <=

5

GB 6324.4

10

Oxo-compound, mg/kg <=

10

GBB 6018

11

Water, mg/kg <=

200

GB/T 6283

12

TBC 2), mg/kg <=

80-120

GB 6020

Note: 1) DMF means N.N-dimethy /formamide

2) TBC means tributyl citrate

3) TBC can be adjusted as per client抯 requirement

Specification 2: chemical-grade isoprene: Q/SH 012.11.04-1998 (Enterprise Standard)

No.

Item

Index

Testing Method

1

Appearance

colourless or light colour transparent, no mechanical admixture

Q/SH 012.11.04-1998

2

Content, %(m/m) >=

98.0

3

TBC 1) mg/kg

80-120

GB 6020

Note: 1) TBC means tributyl citrate

2) TBC can be adjusted as per diment抯 requirement

 
Scope of Application: ?  
Major Applications: 營soprene is a very important C5 diene(s), and can be used to make, via polymerization, synthetic rubber, plastics and terpene抯 compounds. It has typical conjugated double bond with reactive chemical nature, so that it can synthesize per 
Process Method: ?  
Packing: Bulk or 200L drum.  
Packing Size: ?  
Storage: Stored at low temperature, especially in summer, below 15℃, and well ventilated place, kept away from open fire, heat source and direct sunlight. The product is not suitable for long term storage due to its sensibility to polymerization, package should be sealed, better to fill it with N2. to isolate the air. Stored separately from oxidizer or acid,.  
Transportation: As hazardous matters class I, the bulk can be handled by tank truck..  
Safety Precautions: 1. The product is inflammable and explosive with explosion limit, in atmosphere, of 1.5~9.7%(v/v), flash point ?3℃, spontaneous ignition: 220℃. It belongs to category 3.1 in respect of hazard classification (GB6944) and class I in respect of fire hazard classification (GBJ16 揝pecification of fire prevention in building design?. Therefore, all precautions shall take into account the possibility to avoid formation of explosive atmosphere and being exposed to acid, halogen, acid chloride, alkali metal or nitric acid, sulfuric acid and chlorosulfonic acid.
2. Initial Fire due to isoprene can be extinguished with foam, dry powder, or CO2 or sand earth but no water.
3. The product has a rather low boiling point, so that it shall be stored in a cool and dry place. Measures like spraying water shall be taken during summer when it would be placed outdoor and do not transport it at noon when temperature would be high.
4. Safety measures shall be taken as per regulations on hazardous matters for storage and transportation of the product.
5. Products?vapour is somewhat toxic; inhalation of certain amount of it, will cause headache or dizzy, Skin exposed to it repeatedly for long time would cause dermatitis. Therefore the working place shall be kept at a good condition with ventilation and equipped with shower. If a person feel discomfort evidently, he should leave the site immediately to get fresh air; if breath becomes difficult, oxygen shall be given. If breath stops, artificial breathing shall be made. If the discomfort continues long time or becomes severe, immediately go to hospital.
 
SPC

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