A field-tested look at Forchlorfenuron (CPPU): specs, trends, and what buyers actually care about

Let’s be honest: plant growth regulators rarely get the spotlight—until a crop needs uniform sizing or a shelf-life nudge. That’s where Forchlorfenuron tends to pop up in conversations with growers and procurement teams alike. I’ve heard it praised in kiwifruit sheds and melon tunnels; I’ve also heard the “use it wisely” warnings. Both are true.

Technical snapshot (concise but real-world useful)

Name	Forchlorfenuron (CPPU)
CAS No.	68157-60-8
Molecular formula	C12H10ClN3O
Molecular weight	≈247.68 g/mol
Appearance	White powder
Common forms	98% TC; 0.1–1% SP/WP (real-world use may vary)
Assay (HPLC)	≥98% typical for TC
Shelf life	24 months sealed, cool & dry
Origin	No. 66 Xiangtai Road, Yuhua District, Shijiazhuang, Hebei, China

Industry trend check

Fruit producers keep chasing uniform size and firmer pack-outs—especially grapes, kiwifruit, and melons. Regulatory scrutiny isn’t going away, so traceability, batch analytics, and MRL compliance are now baseline, not bonuses. Interestingly, many customers say technical support on timing and concentration matters just as much as purity on paper.

Process flow and quality gates (how reputable vendors run it)

• Materials: qualified intermediates and solvents; supplier audits; COAs verified.
• Methods: controlled synthesis, purification, drying, milling; formulation to SP/WP if required.
• QC: HPLC assay, LC–MS/MS impurities, moisture (Karl Fischer), wetting/dispersion tests for SP/WP.
• Testing standards: CIPAC-aligned methods where available; ISO/IEC 17025 labs; GLP/OECD principles.
• Packaging: lined fiber drums or foil bags; transport/labeling per GHS; stability monitoring.
• Service life: typically 2 years sealed; periodic re-test advised after 18 months.
• Certifications often requested: ISO 9001/14001; product registrations; SDS in target-market format.

Applications, advantages, and field notes

Forchlorfenuron is a cytokinin-type regulator used to promote cell division, fruit set, and sizing. Typical crops: table grapes, kiwifruit, melons; sometimes citrus. Benefits reported: better size distribution, firmness, and shelf-life—provided timing and concentration are on point. Candidly, over-application isn’t clever; follow local labels and MRL guidance.

Vendor comparison (what buyers usually shortlist)

Vendor	Purity (≈)	Forms	Certs	Lead time	Notes
JRain (Hebei, China)	98% TC	TC; 0.1–1% SP/WP	ISO 9001/14001 (typical)	2–4 weeks	Customization and tech sheets available
Vendor X (EU)	97–99%	SP focus	REACH-ready	4–6 weeks	Premium pricing; strict documentation
Vendor Y (Trader)	95–98%	TC	Varies	Stock-dependent	Check batch-to-batch consistency

Customization and support

Common requests: tailored SP (0.1–0.5%), smaller pack sizes (1–5 kg foil), bilingual SDS/labels, and residue-support data. Many customers say quick pre-season deliveries beat a marginal price drop.

Case notes and indicative data

• Grapes (packhouse feedback): ≈8–12% better size uniformity; firmness up slightly at 7-day transit.
• Kiwifruit (Shaanxi example): average count improved by ≈12% with a 0.5% SP program; MRLs remained compliant under local guidance.
• Melons: reduced culls for undersized fruit; ROI depended on timing—surprisingly sensitive.

Compliance reminder: Always follow local registration, label instructions, and MRL frameworks. QC using ISO/IEC 17025 labs and CIPAC-aligned methods is recommended.

Authoritative references

1. FAO/WHO JMPR – Evaluations of pesticide residues: Forchlorfenuron. https://www.fao.org/jmpr
2. US EPA – Pesticide Chemical Search: Forchlorfenuron. https://iaspub.epa.gov/apex/pesticides
3. EFSA – Pesticide residues and MRLs (Forchlorfenuron resources). https://www.efsa.europa.eu/en/topics/topic/pesticides
4. CIPAC – Analytical methods for pesticide formulations. https://www.cipac.org/