Grouping MWCNTs based on their similar potential to cause pulmonary hazard after inhalation: a case-study

Table 2 Panel of MWCNT included in case study

MWCNT	Manufacturer/Distributor	Product Code	Surface Chemistry	Carbon (%)	Length		Diameter		Aspect Ratio	Surface Area	Oxygen Content
					Mean (µm)	± SD (µm)	Mean (nm)	± SD (nm)	(L/D)	(m²/g)	mmol/g
NM-400	JRC	JRCNM04000a	PRISTINE	86.2	0.85	0.1	11	3	77.27	254	0.79
NM-401	JRC	JRCNM04001a	PRISTINE	99.7	4	0.37	67	24	59.7	18	0.03
NM-402	JRC	JRCNM04002a	PRISTINE	96.1	1.4	0.19	11	3	127.27	226	0.28
NM-403	JRC	JRCNM04003a	PRISTINE	99.1	0.4	0.03	12	7	33.33	135	0.19
NRCWE006	Mitsui/Hadogaya	XNRI MWNT-7	PRISTINE	99.6	5.7	0.49	74		77.02	26	0.08
NRCWE040	Cheaptubes	sku-030102	PRISTINE	98.6	0.52	0.59	20.56	6.9	25.29	150	0.35
NRCWE041	Cheaptubes	sku-030202	OH	99.2	1	2.95	26.38	11.1	37.9	152	1.69
NRCWE042	Cheaptubes	sku 030,302	COOH	99.2	0.72	0.97	20.5	5.32	35.12	141	4.09
NRCWE043	Cheaptubes	sku 030,107	PRISTINE	96	0.771	3.471	26.73	6.88	28.84	82	0.18
NRCWE044	Cheaptubes	sku 030,207	OH	96	1.33	2.454	32.55	14.4	40.92	74	0.23
NRCWE045	Cheaptubes	Sku 030,307	COOH	92	1.553	2.954	28.07	13.85	55.32	119	0.63
NRCWE046	Cheaptubes	sku-030111	PRISTINE	98.7	0.72	1.2	17.2	5.8	41.8	223	0.63
NRCWE047	Cheaptubes	sku 030,112	OH	98.7	0.53	0.59	12.96	4.4	40.89	216	0.26
NRCWE048	Cheaptubes	sku030113	COOH	98.8	1.6	5.6	15.08	4.7	106.1	185	0.58
NRCWE049	Cheaptubes	sku 030,114	NH₂	96	0.731	1.473	13.85	6.09	52.77	199	0.33

PC characterisation data extracted from [11, 13]. Surface area determined by Brunauer–Emmett–Teller (BET) surface area analysis, Carbon purity and oxygen content determined by combustion elemental analysis, length and diameter measured by scanning electron microscopy of MWCNT dispersed by ultrasonication in media containing 2% fetal calf serum

ISSN: 1743-8977