Sodium 4-vinylbenzenesulphonate

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosiveness

Type of information:

experimental study

Adequacy of study:

key study

Study period:

July 16, 2007 to July 19, 2007

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

test procedure in accordance with national standard methods with acceptable restrictions

Qualifier:

according to guideline

Guideline:

other: JIS:Z 8818;2002

Deviations:

not specified

Principles of method if other than guideline:

The test substance was blowing to make powder cloud and then ignited it with electric spark.

GLP compliance:

no

Key result

Parameter:

other: Explosive under influence of flame

Remarks:

migrated information

Remarks on result:

negative (not further specified)

1.   Lower explosion limiting concentration

Apparent lower limiting concentration                 350 g/m³

Explosibility                                                          Low

 (Low; More than 100 g/m³)

 

Table 1. Lower explosion limiting concentration of Sodium styrenesulfonate

Concentration	Results*
100	×
200	×
300	×××××
350	×××△
400	××△
500	△
600	△
800	△
1000	△

               * ○: Explosion △; Explosion ×; Not explosion

○ Explosion: Upper part of filter paper was broken and fire was spread all of the explosion tube.

△ Explosion: Upper part of filter paper was not broken, but the flame was rose up above 100mm.

×Flame was less than 100 mm or only spark between electrodes was observed.

 The test repeated 5 times at the same concentration, the lowest limiting explosion powder dust concentration was determined if even one time explosion was observed.

 

2.   Limiting oxygen concentration

Limiting Oxygen Concentration:            17.5 %

○ Explosion : Explosion pressure > 0.5 kgf/cm²

△ Explosion : 0.1 kgf/cm²≦Explosion pressure≦0.5 kgf/cm²

×Non-explosion : Pressure rise < 0.1 kgf/cm²or equal to the blowing pressure.

 

Table 2-1 Results of measurement of limiting oxygen concentration for Sodium styrenesulfonate

No	Sample weight mg	Sample conc. g/m^3	Oxygen conc. %	Explosion *	Explosion pressure ×10^5Pa	Maximum Pressure rising rate ×10^5Pa/s	Average pressure rising rate ×10^5Pa/s	Time for maximum pressure sec
1	734.0	400	15.0	×	-	-	-	-
2	1468.0	800	15.0	×	-	-	-	-
3	2202.0	1200	15.0	×	-	-	-	-
4	2936.0	1600	15.0	×	-	-	-	-
5	3670.0	2000	15.0	×	-	-	-	-
6	2569.0	1400	17.0	×	-	-	-	-
7	2936.0	1600	17.0	×	-	-	-	-
8	3303.0	1800	17.0	×	-	-	-	-
9	3670.0	2000	17.0	×	-	-	-	-
10	2202.0	1200	17.5	×	-	-	-	-
11	2202.0	1200	17.5	×	-	-	-	-
12	2202.0	1200	17.5	×	-	-	-	-
13	2569.0	1400	17.5	×	-	-	-	-
14	2569.0	1400	17.5	×	-	-	-	-
15	2569.0	1400	17.5	×	-	-	-	-
16	2936.0	1600	17.5	×	-	-	-	-
17	2936.0	1600	17.5	×	-	-	-	-
18	2936.0	1600	17.5	×	-	-	-	-
19	3303.0	1800	17.5	×	-	-	-	-
20	3303.0	1800	17.5	×	-	-	-	-
21	3303.0	1800	17.5	×	-	-	-	-
22	3670.0	2000	17.5	×	-	-	-	-
23	3670.0	2000	17.5	×	-	-	-	-
24	3670.0	2000	17.5	×	-	-	-	-
25	2018.0	1100	18.0	×	-	-	-	-
26	2018.0	1100	18.0	×	-	-	-	-
27	2128.0	1160	18.0	×	-	-	-	-
28	2128.0	1160	18.0	×	-	-	-	-
29	2128.0	1160	18.0	×	-	-	-	-
30	2165.0	1180	18.0	△	-	-	-	-

 * ○;Explosion  △;Explosion ×; Non-explosion

 

Table 2-2 Results of measurement of limiting oxygen concentration for Sodium styrenesulfonate

No	Sample weight mg	Sample conc. g/m^3	Oxygen conc. %	Explosion *	Explosion pressure ×10^5Pa	Maximum Pressure rising rate ×10^5Pa/s	Average pressure rising rate ×10^5Pa/s	Time for maximum pressure sec
31	2202.0	1200	18.0	×	-	-	-	-
32	2202.0	1200	18.0	△	0.1	<1	<1	0.799
33	2385.0	1300	18.0	△	0.1	1	<1	0.327
34	2936.0	1600	18.0	△	0.1	<1	<1	0.538
35	3670.0	2000	18.0	△	0.2	<1	<1	0.503
36	1835.0	1000	18.0	×	-	-	-	-
37	1871.7	1020	18.5	×	-	-	-	-
38	1871.7	1020	18.5	×	-	-	-	-
39	1871.7	1020	18.5	×	-	-	-	-
40	1945.1	1060	18.5	△	0.2	<1	<1	0.515
41	2018.5	1100	18.5	×	-	-	-	-
42	2018.5	1100	18.5	×	-	-	-	-
43	2018.5	1100	18.5	△	0.1	1	<1	0.436
44	2091.0	1140	18.5	△	0.2	1	1	0.398
45	2202.0	1200	18.5	△	0.1	1	<1	0.254
46	2936.0	1600	18.5	△	0.2	<1	<1	0.437
47	3670.0	2000	18.5	△	0.2	1	<1	0.404
48	1027.0	560	19.0	×	-	-	-	-
49	1027.0	560	19.0	×	-	-	-	-
50	1027.0	560	19.0	×	-	-	-	-
51	1101.0	600	19.0	×	-	-	-	-
52	1101.0	600	19.0	×	-	-	-	-
53	1101.0	600	19.0	△	0.2	1	1	0.385
54	1211.1	660	19.0	△	0.1	<1	<1	0.349
55	1284.5	700	19.0	×	-	-	-	-
56	1284.5	700	19.0	△	0.2	1	1	0.345
57	1468.0	800	19.0	△	0.1	1	1	0.186
58	1835.0	1000	19.0	△	0.3	1	1	0.379

* ○;Explosion  △;Explosion ×; Non-explosion

 

Interpretation of results:

non explosive

Remarks:

Migrated information

Conclusions:

Sodium p-styrenesulfonate did not generate powder dust explosioin.
Sodium p-styrenesulfonate is not explosive.

Executive summary:

The explosibility of sodium p-styrenesulfonate was evaluated by powder dust explosion property.

The explosibility of sodium p-styrenesulfonate was very low under test conditions.

Description of key information

The explosibility of sodium p-styrenesulfonate was evaluated by powder dust explosion property.

The explosibility of sodium p-styrenesulfonate was very low under test conditions.

Key value for chemical safety assessment

Explosiveness:

non explosive