Methodology

How XchangeIQ checks a chemical

Every answer comes from an official list or a recognised database, with the source and its date shown under the answer. Nothing is guessed: where we have no data, we say so.

What the labels mean

OK
Nothing in the lists we check stands in the way.

CHECK
Allowed, but with a licence, registration, limit, condition or extra duty.

STOP
Banned, prohibited or tightly controlled (for example a banned pesticide or an NDPS substance).

NO DATA
Not confirmed either way. Ask an expert before you trade.

How a check works

Identify the chemical. A name, trade name or CAS number is matched to one compound in a local copy of PubChem (one million compounds); salts are matched to their parent where a rule covers the parent.
Match it against each list. By CAS number first, then by structure (for families such as PFAS or CFCs), then by exact name. Tariff lines are found by the Customs Tariff's own wording and chapter notes.
Answer each question in plain words, with the rule, the source and its date. The overall verdict is the most serious label among the cards.

Sources and dates

Covers	Source	Coverage and date
Recorded reactions	USPTO patent grants 1976–2016 and applications 2001–2016	1,252,488 recorded steps after removing mis-mapped and formulation records
Reaction conditions, yields, procedures	USPTO grants, text-mined reaction records (CC0)	Solvents, catalysts, temperatures, times, reported yields and step-by-step procedures, 1976–2016
Compound data and safety	PubChem (NIH)	1,000,000 compounds held locally (names, CAS numbers, structures), GHS classes for 193,009, flash points, UN numbers; live lookups for descriptions, toxicity and exposure limits
US patents and exclusivity	FDA Orange Book	October 2026 edition
Patent use codes	FDA Patent Use Codes and Definitions	4,627 codes, retrieved 28 Oct 2026
EU pesticide status and residue limits	EU Pesticides Database API (European Commission)	Live: approval status, ADI/ARfD, MRLs per food
International residue limits	Codex Alimentarius Pesticide Residues in Food database (FAO/WHO)	Live: Codex MRLs per food, 240 pesticides
Indian residue limits	FSSAI Contaminants, Toxins and Residues Regulations, 2011 (reg. 2.3.1)	213 pesticides, 1,069 limits; compendium Version IX, 3 Feb 2026
Indian pesticide status	CIB&RC registered, banned and restricted lists	Lists dated March and July 2026
Indian new-drug approvals	CDSCO approval lists	2020 to 2026
Import tariff	Customs Tariff of India, First Schedule (CBIC)	All 96 chapters as on 30.06.2025: 12,253 tariff items; effective duty with notification 45/2025-Customs (concessions) and 9/2025-Integrated Tax (Rate) (IGST)
Export controls	DGFT SCOMET list (Appendix 3, ITC (HS))	2025 list as on 23.09.2025; 339 chemicals by CAS number, plus the CWC Schedule 2B04 structure family
Controlled precursors	NDPS Regulation of Controlled Substances Order 2013	Schedules A, B and C
Import and export policy	DGFT ITC(HS) 2022, Schedule 1 (Import) and Schedule 2 (Export)	Chapters 25–40, about 3,500 lines each: Free, Restricted, Prohibited or state trading, with conditions; checked against DGFT’s own restricted and prohibited lists
Anti-dumping duties	CBIC Customs (ADD) notifications 2021–2026	48 chemical and polymer duties in force on 31 Oct 2026, with the amount per country and producer from each notification’s duty table
Narcotic and psychotropic drugs	NDPS Act 1985 Schedule (to Feb 2024); UN 1961 Convention Schedules I and II	173 psychotropic substances (incl. tramadol, ketamine) and 130 narcotic drugs; salts matched by structure
Prescription drug schedules	Drugs and Cosmetics Rules 1945, Schedules H, H1, X	As amended to 31 Dec 2016: 512, 46 and 16 entries
Hazardous chemicals	MSIHC Rules 1989 (as amended to 2000), Schedules 1 and 3	684 hazardous chemicals; storage thresholds for major-accident duties
BIS Quality Control Orders	Department of Chemicals and Petrochemicals notifications	Withdrawn, suspended and still-notified chemical QCOs, to 30 Oct 2026
PESO licences	Petroleum Rules 2002, Gas Cylinders and SMPV(U) Rules 2016, Explosives Rules 2008	Petroleum classes from flash points (1,891 compounds) and fuel products; gases, explosives, ammonium nitrate, calcium carbide
Global treaties	Stockholm (POPs), Rotterdam (PIC Annex III), Montreal Protocol and Kigali Amendment	POPs as listed after COP-12 (2025) with India’s ratifications; 59 PIC chemicals; CFC/HCFC/HBFC groups, halons, HFCs
EU REACH	ECHA lists, as published in PubChem	13,431 registered compounds; 249 SVHCs; 751 Annex XVII restrictions
EU harmonised classification	CLP Regulation (EC) 1272/2008, Annex VI Table 3 (EUR-Lex consolidated text)	4,418 entries as on 1 Jul 2026; 1,136 carcinogens, mutagens or reproductive toxicants in category 1A/1B
US and Australian inventories	US EPA TSCA Inventory (July 2026); DEA lists; AICIS (via PubChem)	About 70,000 TSCA substances with active/inactive status and rule flags; DEA controlled and listed chemicals
Indian market prices	RasayanXchange daily rates and catalogue	Daily from 12 Oct 2026; 268 catalogued chemicals

How often it is updated

Monthly: anti-dumping duties (Customs (ADD) notifications) and BIS Quality Control Orders.
When published: the Customs Tariff and duty notifications, DGFT ITC(HS) policy and the SCOMET list, NDPS and drug schedules, the global treaty lists, EU CLP and REACH, and US TSCA.
Daily: Indian market prices from RasayanXchange. Change alerts re-check watched chemicals every day.

Limits

XchangeIQ gives guidance from official lists, not legal advice. Confirm with DGFT, customs or the regulator before you trade.
Duty is an estimate for the matched tariff line; the line that applies is decided by customs for the goods as presented. The tariff is as on 30.06.2025, plus later notifications we hold.
Indian patents are not checked. Mixtures are classified from their components; physical hazards need tests of the mixture itself.
Found a mistake? Tell us at rasayanxchange.com/contact and we will correct it.