Polymer-related chemicals

High Performance Polymerization Inhibitors

small amount added Prohibition of polymerization

Plastics manufacturing

Polymerization inhibitors are reagents which are used to prevent undesirable polymerization by light or heat. Conventional polymerization inhibitors, such as hydroquinone, are at a disadvantage because they cannot prevent polymerization under certain conditions. By contrast, high-performance polymerization inhibitors Q-1300 and Q-1301 show a strong polymerization inhibiting effect when purifying or storing highly reactive monomers regardless of conditions. Since Q-1300 is water-soluble, and Q-1301 is oil-soluble, these are applicable for different monomers.

Image of polymerization inhibitor What is high performance polymerization inhibitor?

Q-1300

(Ammonium N-Nitrosophenylhydroxylamine)

Molecular formula of Q-1300
CAS RN® 135-20-6
Molecular weight 155.16
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of the Q-1300

Physicality

Color Appearance white - slightly yellowish brown
crystalline powder
Melting point/freezing point 140-144(dec.) ℃
Solubilities water, methanol : soluble.
N,N-dimethylformamide : slightly soluble

Packaging

  • 20kg / 5kg / 500g

Related laws and regulations

TSCA Listed
EINECS Listed
REACH the substance is exempted from the obligation to register.

Change with time

Q-1300 was stored under arbitrary temperature conditions.The appearance and decomposition point of the solid after storage were measured.In addition, the degree of coloring of the solid 1% aqueous solution after storage was measured. When storing Q-1300, 5 wt% ammonium hydrogen carbonate was added as a stabilizer.

Temperature 10℃ or less 37℃
Item Appearance Decomposition
temperature
（℃）		 Status of
water
solution		 APHA Appearance Decomposition
temperature（℃）		 Status of
water
solution		 APHA
0（day) Slightly yellow powder 141.5 Almost clear 15 Slightly yellow powder 141.5 Almost clear 15
10 141.6
25 142.4 20
40 Slightly brown crystalline powder 141.8 Very slightly cloudy 40
50 141.6 50
60 Light brown crystalline powder 141.9 Slightly cloudy 120
120 - - - -

※APHA : American Public Health Association 　Reference standard for measurement of water color

Q-1301

(N-Nitrosophenylhydroxylamine aluminium salt)

Molecular formula of Q-1301
CAS RN® 15305-07-4
Molecular weight 438.33
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of the Q-1301

Physicality

Color Appearance white - light yellow brown powder
Melting point/freezing point ≧160℃
Solubilities water : insoluble.
toluene, tetrahydrofuran, chloroform : soluble.
methanol : slightly soluble

Packaging

  • 5kg / 1kg

Related laws and regulations

TSCA Listed
EINECS Listed
REACH Not Listed

Change with time

QSimple Q-1301, after being stored at any temperature, was measured for appearance in its solid state, melting point, content and the colored extent in a THF solution.

Temperature 10℃ 35℃
Item Appearance Melting point
(℃)		 Content
(%)		 Status of THF solution APHA Appearance Melting point
(℃)		 Content
(%)		 Status of THF solution APHA
0（Month) Almost white powder 169.1 99.8 Clear 100 Almost white powder 168.3 99.9 Clear 100
3 169.1 100 150 168.1 98.8 120
6 168.8 99.9 150 167.8 97.5 150
9 169 99.9 150 - - - - -
12 169.2 99.8 150 - - - - -