SITE INDEX
BRITISH
STANDARD SPECIFICATION
BSS 6900:1987
| Characteristic | RAW LINSEEDOIL |
ALKALI REFINED LINSEEDOIL |
ACID REFINED LINSEEDOIL |
BOILED LINSEEDOIL |
TEST METHOD (9) |
|
Density at 23 °C (g/ml) (1) |
0,924 to 0,931 | 0,924 to 0,931 | 0,924 to 0,931 | 0,926 to 0,948 | Clause 6 and ISO 3838 |
|
Colour (Gardner) (2) |
max 13 | max 6 | max 6 | To be agreed between seller and buyer | ISO 4630 |
|
Colour after Heating (Gardner) (2) |
- | max 4 (3) | - | - | Clause 18 |
|
Clarity |
No sediment at 65 °C (4) | No sediment at 15 to 20 °C (4) | No sediment at 15 to 20 °C (4) | No sediment at 15 to 20 °C (4) | Clause 8 |
|
Refractive Index n-D-23 (1) |
1,478 0 to 1,483 0 | 1,478 0 to 1,483 0 | 1,478 0 to 1,483 0 | - | Clause 7 and ISO 5661 |
|
Volatile matter (m/m %) |
max 0,20 | max 0,10 | max 0,10 | max 0,30 | Clause 9 |
|
Ash (m/m %) (5) |
max 0,15 | max 0,02 | max 0,02 | max 0,50 | Clause 10 |
|
Acid Value |
max 4 | max 0,50 (6) | max 9 (5) | max 8 (5) | ISO 3682 |
|
Saponification Value |
188 to 195 | 188 to 195 | 188 to 195 | 188 to 200 | ISO 3681 |
|
Unsaponifiable (m/m %) |
max 1,5 | max 1,5 | max 1,5 | max 2,0 | Annex |
|
Iodine Value (Wijs) (7) |
min 175 | min 175 | min 175 | - | ISO 3961 |
|
Foots (V/V %) (8) |
max 1,0 | - | Nil | - | Clause 11 |
|
PAT Value (m/m %) (8) |
max 0,25 | - | - | - | Clause 12 |
|
Drying Time |
- | - | - | max 24 h at 15 to 20 °C or 15 h at 25 to 30 °C | ISO 1517 and Clause 13 |
|
Colophony (rosin) |
Negative result | Negative result | Negative result | Negative result | Clause 14 |
|
Fish Oil |
Negative result | Negative result | Negative result | Negative result | Clause 15 |
|
Mineral Acid |
- | - | Negative result | - | Clause 16 |
|
Break |
- | Non-visible | - | - | Clause 17 |
(1) 23 °C is the standard temperature unless otherwise agreed
(2) Not applicable (Colour in Lovibond scaling)
(3) If the acid value of the neutral oil has been increased by the addition of fatty acids, then the requirement for colour after heating should be agreed upon between sellers and buyers
(4) Stricter requirements may be agreed upon between sellers and buyers
(5) Or to be agreed upon between sellers and buyers
(6) Alkali Refined Linseedoil may have its acid value adjusted to other limits for specific uses.
(7) Not applicable (Definition for High Iodine Value Linseed Oil)
(8) By agreement between sellers and buyers, one of these tests may be omitted
(9) Consult the original documents for more details on the clauses and ISO-References