| |
|
Ammonium Bifluoride |
|
|
|
ITEM |
|
SPEC |
|
|
|
Purity (%) |
|
min. 98.0 % |
|
|
|
Loss on Drying (%) |
|
max. 1.6% |
|
|
|
Ignition Residue Content (%) |
|
max. 0.1% |
|
|
|
Sulfate Content as SO4 (%) |
|
max. 0.1% |
|
|
|
Ammonium Fluorosilicate (%) |
|
max. 0.7% |
|
DL-Alanine |
|
|
|
ITEM |
|
SPEC |
|
|
|
Assay |
|
98.5 - 101.0% |
|
|
|
Transmittance |
|
min. 98.0% |
|
|
|
pH |
|
5.5 - 7.0 |
|
|
|
Loss on drying |
|
max. 0.20% |
|
|
|
Residue on ignition |
|
max. 0.10% |
|
|
|
Heavy metals [Pb] |
|
max. 10ppm |
|
|
|
Chloride [Cl] |
|
max. 0.02% |
|
|
|
Iron [Fe] |
|
max. 20ppm |
|
|
|
Arsenic [As2O3] |
|
max. 1ppm |
|
|
|
Sulfate [SO4] |
|
max. 0.02% |
|
|
|
Ammonium salt [NH4] |
|
max. 0.02% |
|
Glycine |
|
|
|
ITEM |
|
SPEC |
|
|
|
Assay |
|
98.5% - 101.5% |
|
|
|
Chloride (Cl) |
|
min. 0.007% |
|
|
|
Sulfate (SO4) |
|
max. 0.0065% |
|
|
|
Heavy metal (Pb) |
|
max. 0.002% |
|
|
|
Loss on drying [105℃, 2h] |
|
max. 0.5% |
|
|
|
Residue on ignition |
|
max. 0.1% |
|
|
|
pH |
|
5.9 - 6.4 |
|
|
|
Ammonium salt (NH4) |
|
max. 0.02% |
|
|
|
Hydrolyzable substances |
|
Must comply |
|
|
|
Organic volatile impurities |
|
Must comply |
|
|
|
Appearance |
|
White crystal or crystallized powder |
|
MNBA-S |
|
|
|
ITEM |
|
SPEC |
|
|
|
Appearance |
|
White or Light yellow crystal |
|
|
|
Assay |
|
min. 98.0% |
|
|
|
Water |
|
20.0 - 24.0% |
|
|
|
pH |
|
7 - 8 |
|
|
|
Bulk specific gravity |
|
min. 0.75 |
|
m-nitrobenzoic
acid |
|
|
|
ITEM |
|
SPEC |
|
|
|
Appearance |
|
Light yellow fine grain crystal |
|
|
|
Assay |
|
min. 99.0% |
|
|
|
Melting point |
|
140.0 - 142.0℃ |
|
|
|
Water |
|
max 0.5% |
|
P-Nitrobenzoic
Acid |
|
|
|
ITEM |
|
SPEC |
|
|
|
Appearance |
|
White to pale yellow crystal powder |
|
|
|
Melting Point (℃) |
|
239 - 242 ℃ |
|
|
|
Content (weight) |
|
min. 99.0% |
|
|
|
Water |
|
max. 0.3% |
|
|
|
Aqueous Alkali test |
|
No red color |
|
Sodium
Bifluoride |
|
|
|
ITEM |
|
SPEC |
|
|
|
Appearance |
|
WET / White Powder |
|
|
|
Assay (NaHF2) |
|
min. 98.0% |
|
|
|
Chloride (Cl) |
|
max. 0.1% |
|
|
|
Sulfate (SO4) |
|
max. 0.1% |
|
|
|
HF |
|
max. 0.2% |
|
|
|
Water |
|
max. 5% |
|
|
|
SiO2 |
|
max. 0.5% |
|
|
|
Water-insoluble content |
|
max. 0.5% |
|
Sodium
Bisulfate, (SBS) Anhydrous |
|
|
|
ITEM |
|
SPEC |
|
|
|
Assay (wt % NaHSO4) |
|
92.0 - 95.2% |
|
|
|
Sodium sulfate (wt % Na2SO4) |
|
4.2 - 8.0% |
|
|
|
Moisture, as water (wt %) |
|
max. 0.6% |
|
|
|
Bulk density, loose (g/cc) |
|
1.28 - 1.37 |
|
|
|
Color |
|
max. 5.5 |
|
|
|
Chlorides (ppm)* |
|
max. 700ppm |
|
|
|
Iron (mg/kg)* |
|
max. 20mg/kg |
|
|
|
Water-insoluble substances (wt %)* |
|
max. 0.05% |
|
|
|
Lead (mg/kg)* |
|
max. 1.0mg/kg |
* Analysis based on historical data.
|
Sodium
Meta Nitro Benzene Sulfonate |
|
|
|
ITEM |
|
SPEC |
|
|
|
Assay |
|
min. 96.0% |
|
|
|
pH |
|
7 - 9 |
|
|
|
Solubility in water (20% Sol.) |
|
to pass test |
|
|
|
Water-insoluble content |
|
max. 0.1% |
|
Vanillin |
|
|
|
ITEM |
|
SPEC |
|
|
|
Appearance |
|
White to slightly yellow crystals,
usually needles. |
|
|
|
Odor |
|
Odor and taste of vanilla |
|
|
|
Identification (Infared spectra) |
|
The spectrum of the sample
exhibits relative maxima at the
same wavelengths as those of
the spectrum below. |
|
|
|
Assay (on the dried basis) |
|
min. 99.0% |
|
|
|
Loss on drying |
|
max. 0.5% |
|
|
|
Melting range |
|
81 - 83 ℃ |
|
|
|
Residue on ignition |
|
max. 0.05 % |
|
|
|
Heavy Metals (Pb) |
|
max. 0.001% |
|
|
|
Arsenic |
|
max. 0.0003% |
|
|
|
Solubility |
|
Soluble in alcohol, chloroform,
ether; 1g dissolves in 100ml water
at 25℃, in 20ml glycerin, and in
20ml water at 80℃ |
|
|
