| Name of substance | Type of substance | Nature of material | Primary particle size (nm) | Method used to determine particle size | Specific area (BET method) (m2/g) | Commercially available as E 551 | Pharma use | Cosmetics use |
|---|---|---|---|---|---|---|---|---|
| AEROSIL® | 380 | Fumed silica | TEM | 380 ± 30 | Yesa | No | Yes | |
| 300 | 7 | 300 ± 30 | No | Yes | Yes | |||
| 200 | 12 | 200 ± 25 | Yesa | Yes | Yes | |||
| 150 | 14 | 150 ± 25 | No | No | No | |||
| 130 | 16 | 130 ± 25 | No | No | Yes | |||
| Ox50 | 40 | 50 ± 15 | No | No | No | |||
| R972 | Surface‐treated silica | No | Yes | Yes | ||||
| COK84 | It is mixture of AEROSIL® 200 and highly dispersed fumed aluminium oxide in the ratio of 5:1 | No | No | No | ||||
| MOX80 | It is a co‐fumed oxide consisting of silicon dioxide and approximately 1% aluminium oxide, manufactured using the AEROSIL® process | No | No | No | ||||
| FK | 700 | Precipitated silica | 15,000 (aggregate) | 700 | No | |||
| HDK® | V15 | Fumed silica (hydrophilic grade) | 150 ± 20 | No | ||||
| KHD15 | Surface‐treated pyrogenic silica | No | ||||||
| KHD50 | No | |||||||
| Sident® | 9 | Precipitated silica | 9,000 (D50) | Laser diffraction | 45 | No | No | Yes |
| Sipernat® | 22 | Precipitated silica | 115,000 (D50) | Laser diffraction | 190 | Yes | No | Yes |
| 50 | 50,000 (D50) | 500 | Yes | No | Yes | |||
| 350 | 4,500 (D50) | 55 | Yes | No | No | |||
| 30b | ||||||||
| 42b | ||||||||
| Zeosyl® | 113 | Precipitated silica | No | |||||
| Syloid® | 244 FP | Silica gel | 5,500 | Malver | 310 | Yes | Yes | |
| HC | No | |||||||
| CAB‐O‐SIL® | F2c | Fumed silica | No | |||||
| EH‐5F | Yes | Yes | ||||||
| M‐5F/P | Yes | Yes | Yes | |||||
| TS500 | No | |||||||
| TS530 | No | Yes | ||||||
| TS610 | No | Yes | ||||||
| N70TSd | No | Yes | ||||||
| Silcron | G‐910 | Silica gel | No | |||||
| Sicastar‐Red | Unknowne | |||||||
| Spherisorb | Silica gel | 5,000 | Noe | |||||
| Ludox® | CL | Colloidal silica | No | |||||
| AS‐20 | No | |||||||
| AM | No | |||||||
| SM‐30 | No | |||||||
| Tixosil® | T43 | Precipitated silica | 5–15 | TEM | 250 ± 30 | Yes | Yes | |
| T73 | 15–25 | TEM | 85 ± 25 | No | ||||
| Levasil | 200 | ‘Amorphous silica, aqueous colloidal solution’ | 5–100 | 200 | No | |||
| 50 | 5–100 | 50 | No |
BET: Brunauer–Emmett–Teller; TEM: transmission electron microscopy.
a
Specific food‐grades of AEROSIL 380 (AEROSIL 380F) and AEROSIL 200 (AEROSIL 200F) are used as food additives.
b
Not produced anymore.
c
Not commercial.
d
Current name is TS720.
e
This product is not manufactured by ASASP member companies; based on the information found in internet these product is not suitable to be used as food additive E 551.