Foaming agent


● Cyclopentane


1. Molecular formula: C5H10
2. Cyclopentane can be used as a new foaming agent for rigid polyurethane foam and can be substituted for CFCS which distroies the atmospheric ozone layer. Now it is widely used in producing non-CFCs refrigerator, freezer and cold storage and tubing insulating materials. With the coming of the deadline to use ODS by Montreal protocol; CFCs and HCFCs will prohibited soon, and cyclopentane will be play a key role in the polyurethane foam applications.
3. Physical features

Appearance

colorless and transparent liquid, smell like gas oil.

Boiling point(101.3kPa):

49.25oC

Relative density(20oC)

0.745

Flash point:

-42oC

Self-burning temperature:

361oC

Explosion limit(vol)

1.4 -- 8.7%

Fire hazard class

class A for anti-fire
class B for explosion-proof


▶ specification

Item

Figures

colorless and transparent liquid, no mechanical impurity and suspending matters

Density (g/cm3)

0.73-0.75

Cyclopentane (wt%)

≥95

n-pentane (wt%)

≤3.5

Isopentane (wt%)

Isohexane (wt%)

≤1.5

n-hexane ( ppm)

≤10

Benzene (ppm)

≤1

Water ( ppm)

≤150


▶ Safety notice

Cyclopentane is ignitable and explosive, so it should be kept far from heat, fire, oxidant and chemical reactant. It should be kept in shady, cool, dry and well ventilated place. when transport, load and unload should be carefully and prevent vibration of the container. When delivery in the pipe, static electricity should be in grounding. Don,t swallow it when operation, and avoid steam absorbing and touch into eye, skin and clothes.

It should be noted that n-pentane and isopentane have lower bioling point temperature than cyclopentane, please pay attention to the safety notice of cyclopentane.



● n-pentane


1. Molecular formula: C5H12

2. Usage: n-pentane can be used as a foaming agent of EPS,and as desorption agent for dewax of molecular sieve.

3. Physical features

Appearance

colorless and transparent liquid, smell like gas oil.

Boiling point(101.3kPa):

36.1oC

Relative density(20oC)

0.63

Flash point:

-40oC

Self-burning temperature:

260oC

Explosion limit(vol)

1.4 -- 7.8%

Fire hazard class

class A for anti-fire
class B for explosion-proof


▶ specification

Item

Figures

Appearance

Colorless and transparent liquid, no mechanical foreign bodies and no-suspending matters.

Density (g/cm3)

0.60-0.65

n-pentane (wt%)

≥95

Cyclopentane (wt%)

≤0.5

C6 (wt%)

≤0.5

Sulfur (ppm)

≤1

Free water

No



● Isopentane

1. Molecular formula: C5H12
2. Usage: isopentane can be mixed with n-pentane to make EPS and it also can be mixed with cyclopentane as a foaming agent for rigid urethane foam.
3. Physical features

Appearance

colorless and transparent liquid, light aromatic odor

Boiling point(101.3kPa) :

27.85oC

Relative density(20oC) :

0.62

Flash point:

-56oC

Self-burning temperature :

420oC

Explosion limit(vol)

1.4 -- 8.3%

Fire hazard class

class A for anti-fire
class B for explosion-proof


▶ specification

Item

Figures

Appearance

Colorless and transparent liquid, no mechanical foregin bodies and suspending matter

Density (g/cm3)

0.58-0.63

Isopentane (wt%)

≥95

n-pentane (wt%)

≤4.0

Sulfur (ppm)

≤1

Free water

No