Acid Black 107 is a high-concentration acid dye formulated for deep, neutral-to-black shades on protein fibres (wool, silk) and polyamides (nylon). It delivers strong leveling, excellent exhaustion and reproducible shade depth across batches. Designed for industrial textile dyeing and lab-scale sampling, Acid Black 107 offers reliable mixing compatibility with other acid dyes and predictable fastness when properly fixed with conventional acid-dyeing auxiliaries.
The appearance is black powder and the aqueous solution is blue-gray.
TRADE NAME:Netural Black BGL
Standard |
Fiber | Soaping | Persperation Fastness | Oxygen bleaching | Light Fastness | |
Fading | Stain | |||||
ISO | Wool | 5 | 4-5 | 5 | 4 | 7-8 |
Leveling(grade) | Transferability | Whitening | Solubility(g/L) | Metal ion effect(grade) | ||
copper | Iron | chromium | ||||
3 | D | bad | 30(90℃) | 4~5 | 4 | — |
Testing method | Fiber | alkali resistant | Carbonization | Chlorination discoloration | Oxygen bleaching color change | Alkaline fluff | Acid fluff | Boiling wool | Soaping | Perspirtaion | Light fastness | ||||
color change | stain | color change | stain | color change | stain | color change | stain | ||||||||
ISO | wool | 5 | 4~5 | 4~5 | 4~5 | 5 | 4~5 | 5 | 3~4 | 4~5 | 1 | 5 | 4~5 | 5 | 7~8 |
Used for wool, silk, tussah, polyamide, PVA, d/cotton, wool/stick blended fabric dyeing and printing.
Run a small-scale lab dyeing (standardized liquor ratio and pH) and measure the CIELab values. Compare L* and a*/b* coordinates to your master batch; deviations in L* indicate tinctorial variation while a*/b* shifts indicate hue drift. Keep a record of liquor ratio, pH, auxiliaries and dyebath temperature for reproducibility.
Brownish or bluish casts usually indicate either under-dosage, incompatible mixing dyes, or insufficient exhaustion/fixation. Check pH control, ensure adequate acidification during fixation, and verify that co-dyes or leveling agents are not shifting the undertone.
Use recommended leveling agents and anti-bleeding auxiliaries for even uptake; acidic salts (e.g., sodium sulfate) help exhaustion in many recipes. Fixatives and post-dyeing rinses—plus standard dyeing softeners—can improve wet and rubbing fastness without altering shade significantly.
Store in a cool, dry, well-sealed container away from direct sunlight and moisture. Avoid extended exposure to high humidity; label batches and rotate stock (first in, first out) to maintain consistent performance.
Follow standard industrial hygiene: use dust control, local exhaust ventilation and appropriate PPE (gloves, eye protection, dust mask). Consult the product SDS for detailed health, environmental and first-aid information specific to the supplied batch.
Yes — mixing with other acid dye blacks or deep navy/red-black dyes is common to tune depth and undertone. Pre-test blends at production scale and document recipes; avoid incompatible dye chemistries that cause leveling problems.
Check tinctorial strength by dyeing a standard sample, verify shade against your master standard, inspect for moisture clumping or foreign matter, and confirm the supplier’s certificate of analysis (batch number, purity, and appearance).
Continuous processes rely on precise air/chemistry control and rapid fixation; batch processes allow longer interaction time. Differences in liquor ratio, pH profile and dwell time can change exhaustion and fixation, so recipes must be optimized per process type.
Most suppliers offer lab samples and a technical datasheet (including spectral data, solubility, recommended recipes and SDS). Request a sample and run a lab-scale reproducibility test before approving large orders.
