introduction
Acetylcysteine Powder is a high‑purity thiol‑containing amino acid derivative, recognized for its potent mucolytic, antioxidant, and detoxification properties, offering a reliable solution for pharmaceutical, nutraceutical, and functional food applications.
Designed for B2B partners, this ingredient is ideal for respiratory health products, liver support supplements, and antioxidant formulations requiring a stable and highly soluble active. Its free thiol group (–SH) effectively breaks disulfide bonds in mucus to reduce viscosity and promote clearance, while also serving as a direct glutathione (GSH) precursor to combat oxidative stress and support hepatic detoxification. With an assay of 98.0–102.0% (dried basis, HPLC) and a molecular weight of 163.19 (C₅H₉NO₃S, CAS 616-91-1), it exhibits excellent water solubility (1 in 3 parts water), good flow properties, and compatibility with tablets, effervescents, sachets, capsules, and inhalation solutions. Recommended usage ranges from 200–600 mg per serving for dietary supplements and up to 600–1200 mg/day for pharmaceutical preparations, depending on indications and regional regulations.
All backed by LANDNUTRA – with ISO, GMP, Halal, and Kosher certifications, full traceability, COA, stability data, and regulatory support to accelerate your product development and global market entry.

Product Characteristics
High purity – 98–102% (HPLC), USP/EP/CP compliant.
Triple action – mucolytic, antioxidant, GSH precursor.
High solubility – 1:3 in water, clear solution.
Low impurities – Pb ≤10ppm, As ≤1ppm, LOD ≤0.5%.
Global certs – ISO, GMP, Halal, Kosher + full COA.
COA
| Test Item | Specification | Result | Status |
|---|---|---|---|
| Appearance | White to off‑white crystalline powder | White crystalline powder | Pass |
| Assay (HPLC, dried basis) | 98.0% – 102.0% | 99.4% | Pass |
| Identification (IR) | Match with reference standard | Conforms | Pass |
| Specific Rotation | +21.0° – +27.0° (C=2, H₂O) | +24.3° | Pass |
| Loss on Drying | ≤ 0.5% | 0.12% | Pass |
| Residue on Ignition | ≤ 0.1% | 0.04% | Pass |
| Heavy Metals (as Pb) | ≤ 10 ppm | < 1 ppm | Pass |
| Arsenic (As) | ≤ 1 ppm | < 0.5 ppm | Pass |
| Chloride (Cl) | ≤ 0.05% | < 0.01% | Pass |
| Sulphate (SO₄) | ≤ 0.05% | < 0.01% | Pass |
| Related Substances (Total Impurities) | ≤ 1.0% | 0.18% | Pass |
| Free Cysteine | ≤ 0.5% | < 0.1% | Pass |
| Total Plate Count | ≤ 1,000 CFU/g | < 100 CFU/g | Pass |
| Yeast & Mold | ≤ 100 CFU/g | < 10 CFU/g | Pass |
| E. coli / Salmonella | Negative | Not Detected | Pass |

1.Proven efficacy – Clinically established mucolytic, antioxidant, and hepatoprotective agent with decades of medical use.
2. High bioavailability – Excellent water solubility and rapid absorption, supporting fast formulation performance in tablets, effervescents, inhalation solutions, and sachets.
3. Multi‑function versatility – One ingredient addressing respiratory health, cellular antioxidant protection, liver detoxification, and immune support – reducing your R&D complexity.
4. Regulatory ready – Complies with USP/EP/CP pharmacopoeia, backed by full COA, stability data, and regulatory documentation for global market access.
5. Clean & stable – Low impurity profile, low moisture, and excellent stability under recommended storage (2‑year shelf life), supporting consistent formulation outcomes.
6. B‑end value – Flexible MOQ, custom packaging, and reliable supply chain reduce procurement risk and simplify inventory management.
Application Fields
Pharma – expectorants, hepatoprotectives
Supplements – antioxidant, GSH precursor
Functional foods – sports, anti‑aging
Veterinary – respiratory, liver support
Personal care – skincare, oral care.
API export – custom specs available
Production Process

Raw Material Preparation → Acetylation Reaction → Neutralization & Filtration → Purification & Refining → Crystallization & Vacuum Drying → Milling, QC Testing & Packaging
Product Quality Advantages
High purity – 98–102% (HPLC), USP/EP/CP compliant.
Low impurities – Pb ≤10ppm, As ≤1ppm, LOD ≤0.5%.
Full testing – assay, related substances, residue on ignition, microbiology.
Global certifications – ISO, GMP, Halal, Kosher.
Full traceability – COA, MSDS, stability data per batch.
Reliable supply – flexible MOQ, custom packaging, consistent quality.
Export Certificates
Landnutra offers full global certifications and verified export documentation for hassle-free customs clearance.

Why choose us
XI'AN LANDNUTRA CO., LTD. – your source for premium Acetylcysteine Powder and high‑purity pharmaceutical actives. We operate dedicated GMP‑certified production facilities with stringent quality control systems to ensure low impurities, consistent particle size, and batch‑to‑batch stability – a level of reliability that generic NAC suppliers cannot guarantee. Our brand Landnutra also supplies N‑Acetyl‑L‑Cysteine (NAC) for respiratory health, S‑Acetyl‑L‑Glutathione for advanced antioxidant delivery, and L‑Cysteine for conventional formulations – allowing you to build a complete sulfur‑based active platform under one roof.
For a tailored Acetylcysteine Powder quotation, sample request, or technical formulation support, contact us at Email: wangjing@landnutra.com or WhatsApp: +86 18092657549 – we respond within one business day with full technical data, COA, and a pricing proposal.
Q: What is Acetylcysteine (NAC)?
A: A thiol‑containing amino acid derivative (CAS 616‑91‑1), white crystalline powder, freely soluble in water. Acts as a mucolytic, antioxidant (GSH precursor), and hepatoprotectant.
Q: What are the main applications?
A: Pharmaceuticals (expectorants, liver detox), dietary supplements (antioxidant, immune), functional foods, veterinary, and personal care.
Q: What is the typical dosage?
A: Supplements: 200–600 mg/day; Pharma: up to 600–1200 mg/day (depending on indication and regulations).
Q: What quality specifications do you meet?
A:Assay 98–102% (HPLC), heavy metals ≤10 ppm, As ≤1 ppm, LOD ≤0.5%, compliant with USP/EP/CP.
Q:What certifications do you hold?
A:ISO 9001, GMP, Halal, Kosher; full COA, MSDS, and stability data per batch.
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