West Bengal Pollution Control Board
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" SCHEDULE 1

[See rule 2e(i), 4(1)(a), 4(2), 17 and 18]

[Part - I]

(a) Toxic Chemicals: Chemicals having the following values of acute toxicity and which owing to their physical and chemical properties, are capable of producing major accident hazards:

Sr.No

Toxicity

Oral toxicity LD50(mg/kg)

Dermal toxicity LD50(mg/kg)

Inhalation toxicity LC50(mg/l)

1.

Extremely toxic

> 5

<40

< 0.5

2.

Highly toxic

>5-50

>40-200

< 0.5 - 2.0

3.

Toxic

>50-200

> 200-1000

>2-10

(b) Flammable Chemicals:

  1. flammable gases: Gases which at 200C and at standard pressure of 101.3 KPa are:-

    1. ignitable when in a mixture of 13 percent or less by volume with air, or
    2. have a flammable range with air of at least 12 percentage points regardless of the lower flammable limits.

    Note: - The flammability shall be determined by tests or by calculation in accordance with methods adopted by International Standards Organisation ISO Number10156 of 1990 or by Bureau of Indian Standards ISI Number 1446 of 1985.

    1. extremely flammable liquids: chemicals which have flash point lower than or equal to 230C and boiling point less than 350C

    (iii) very highly flammable liquids: chemicals which have a flash point lower than or equal to 230C and initial boiling point higher than 350C.

    (iv) highly flammable liquids: chemicals which have a flash point lower than or equal to 600C but higher than 230C.

    (v) flammable liquids: chemicals which have a flash point higher than 60oC but lower than 900 C.

    (c) Explosives: explosives means a solid or liquid or pyrotechnic substance (or a mixture of substances) or an article.

    (a) which is in itself capable by chemical reaction of producing gas at such a temperature and pressure and at such a speed as to cause damage to the surroundings;

    (b) which is designed to produce an effect by heat, light, sound, gas or smoke or a combination of these as the result of non-detonative self sustaining exothermic chemical reaction.

    PART-II

    LIST OF HAZARDOUS CHEMICALS

    1. Acetaldehyde
    2. Acetic acid
    3. Acetic anhydride
    4. Acetone
    5. Acetone cyanohydrin
    6. Acetone thiosemicarbazide
    7. Acetonitrile
    8. Acetylene
    9. Acetylene tetra chloride
    10. Acrolein
    11. Acrylarnide
    12. Acrylonitrile
    13. Adiponitrile
    14. Aldicarb
    15. Aldrin
    16. Allyl alcohol
    17. Allyl amine
    18. Allyl chloride
    19. Aluminiurn (powder)
    20. Aluminiurn azide
    21. Aluminiurn borohydride
    22. Aluminium chloride
    23. Aluminium fluoride
    24. Aluminium phosphide
    25. Amino diphenyl
    26. Amino pyridine
    27. Aminophenol-2
    28. Aminopterin
    29. Amiton
    30. Amiton dialate
    31. Ammonia
    32. Ammonium chloro platinate
    33. Ammonium nitrate
    34. Ammonium nitrite
    35. Ammonium picrate
    36. Anabasine
    37. Aniline
    38. Aniline 2, 4, 6-Trimethyl
    39. Anthraquinone
    40. Antimonypentafluoride
    41. Antimycin A
    42. ANTU
    43. Arsenic pentoxide
    44. Arsenic trioxide
    45. Arsenous trichloride
    46. Arsine
    47. Asphalt
    48. Azinpho-ethyl
    49. Azinphos methyl
    50. Bacitracin
    51. Barium azide
    52. Barium nitrate
    53. Barium nitride
    54. Benzal chloride
    55. Benzenamine 3-Trifluoromethyl
    56. Benzene
    57. Benzene sulfonyl chloride
    58. Benzene 1-(chloromethyl)-4 Nitro
    59. Benzene arsenic acid
    60. Benzidine
    61. Benzidine salts
    62. Benzimidazole, 4, 5-Dichloro-2 (Trifluoromethyl)
    63. Benzoquinone-P
    64. Benzotrichloride
    65. Benzoyl chloride
    66. Benzoyl peroxide
    67. Benzyl chloride
    68. Beryllium (powder)
    69. Bicyclo (2, 2, 1) Heptane-2 -carbon itri le
    70. Biphenyl
    71. Bis (2-chloroethyl) sulphide
    72. Bis (Chloromethyl) Ketone
    73. Bis (Tert-butyl peroxy) cyclohexane
    74. Bis (Terbutylperoxy) butane
    75. Bis (2,4,6-Trimitrophenylamine)
    76. Bis (Chloromethyl) Ether
    77. Bismuth and compounds
    78. Bisphenol-A
    79. Bitoscanate
    80. Boron Powder
    81. Boron trichloride
    82. Boron trifluoride
    83. Boron trifluoride comp. With methylether, 1: 1
    84. Bromine
    85. Bromine pentafluoride
    86. Bromo chloro methane
    87. Bromodialone
    88. Butadiene
    89. Butane
    90. Butanone-2
    91. Butyl amine tert
    92. Butyl glycidal ether
    93. Butyl isovalarate
    94. Butyl peroxymalente tert
    95. Butyl vinyl ether
    96. Butvl-n-mercaptan
    97. C. I. Basic green
    98. Cadmium oxide
    99. Cadmium stearate
    100. Calcium arsenate
    101. Calcium carbide
    102. Calcium cyanide
    103. Camphechlor Toxaphene)
    104. Cantharidin
    105. Captan
    106. Carbachol chloride
    107. Carbaryl
    108. Carbofuran (Furadan)
    109. Carbon tetrachloride
    110. Carbon disulphide
    111. Carbon monoxide
    112. Carbophenothion
    113. Carvone
    114. Cellulose nitrate
    115. Chloroicetic acid
    116. Chlordane
    117. Chlorofenvinphos
    118. Chlorinated benzene
    119. Chlorine
    120. Chlorine oxide
    121. Chlorine trifluoride
    122. Chlormeplos
    123. Chlormequat chloride
    124. Chloroacetal chloride
    125. Chloroacetaldehyde
    126. Chloroaniline-2
    127. Chloroaniline-4
    128. Chlorobenzene
    129. Chloroethyl chloroformate
    130. Chloroform
    131. Chloroformyl morpholine
    132. Chloromethane
    133. Chloromethyl methylether
    134. Chloronitrobenzene
    135. Chlorophacinone
    136. Chiorosulphonic acid
    137. Chlorothiophos
    138. Chloroxuron
    139. Chromic acid
    140. Chromic chloride
    141. Chromium powder
    142. Cobalt carbonyl
    143. Cobalt Nitrilmethylidyne compound
    144. Cobalt (powder)
    145. Colchicine
    146. Copper and compounds
    147. Copperoxydiloride
    148. Counialuryl
    149. Couniaphos
    150. Couniatertralyl
    151. Crimidine
    152. Crotenaldehyde
    153. Crotonaldehyde
    154. Cumene
    155. Cyano-en bromide
    156. Cyano-en iodide
    157. Cyariophos
    158. Cyanothoate
    159. Cyamiric fluoride
    160. Cyclo hexylanline
    161. Cyclohexane
    162. Cyclobexatione
    163. Cycloheximide
    164. Cyclopentadiene
    165. Cyclopentane
    166. Cyclotetramethylenetetranitramine
    167. Cyclotrimethylenetrinitramine
    168. Cypermethrin
    169. DDT
    170. Decahorane (1:4)
    171. Demeton
    172. Demelon S-Methyl
    173. Di-n-propyl peroxydicarbonate (Conc = 80%)
    174. Dialifos
    175. Diazodinitrophenol
    176. Dibenzyl peroxydicarbonate (Conc > 90%)
    177. Diborane
    178. Dichloroacetylene
    179, Dichlorobenzalkonium chloride
    180. Dichloroethyl ether
    181. Dichloromethyl phenylsilane
    182. Dichlorophenol-2.6
    183. Dichlorophenol-2.4
    184. Dichlorophenoxy acetic acid
    185. Dichloropropane-2,2
    186. Dichlorosalicylic acid-3,5
    187. Did-lo-rvos (DDVP)
    188. Dicrotophos
    189.Dieldrin
    190. Diepoxy butane
    191. Diethyl carbamazine citrate
    192. Diethyl chlorophosphate
    193. Diethyl ethanolamine
    194. Diethl peroxydicarbonate (Conc 330%)
    195. Diethyl phenylene diamine
    196. Diethylamine
    197. Diethyfeneglvcol
    198. Diethylene glycol dinitnate
    199. Diethylene triamine
    200. Diethleneglyrol butyl ether
    201. Diglycidyl ether
    202. Digitoxin
    203. Dibydroperoxypropane (Conc- 30%)
    204. Diisobutyl peroxide
    205. Dinietox
    206. Dimethoate
    207. Dimethyl dichlorosilane
    208. Dimethyl hydrazine
    209. Dimethyl nitrosoamine
    210. Dimethyl P phenylene diamine
    211. Dunethyl phosphoramidi cyanidic acid (TABUM)
    212. Dimethl phosphorochloridothioate
    213. Dirnethyl sufolane (DMS)
    214. Dirnethy! sulphide
    215. Dimethylamine
    216. Dimethylaniline
    217. DimethIcarbonyl chloride
    218. Dimetilan
    219. Dinitro O-cresol
    220. Dinitrophenol
    221. Dinitrotoluene
    222. Dinoseb
    223. Dinoterb
    224. Dioxane-p
    225. Dioxathion
    226. Dioxine N
    227 Diphacinone
    228. Diphosphoramide octagnethyl
    229. Diphenyl methane di-isocynate (MDI)
    230. Dipropylene Colycol Butyl ether
    231. Dipropylene glycolmethylether
    232. Disec-butyl peroxydicarbonate (Conc > 80%)
    233. Disufoton
    234. Dithiazamine iodide
    235. Dithiobiurate
    236. Endosulfan
    237. Endothion
    238. Endrin
    239. Epichlorohydrine
    240. LPN
    241 Ergocalciferol
    242. Ergotamine tartarate
    243. Ethanesulfenyl chloride, 2 Oloro
    244. Ethanol 1-2 dichloracolte
    245. Ethion
    246. Ethoprophos
    247. Ethyl acetate
    248. Ethyl alcohol
    249. Ethyl benzene
    250. Ethyl bis amine
    251. Ethyl-bromide
    252. Ethyl carbamate
    253. Ethyl ether
    254. Ethyl hexanol-2
    255. Ethyl mercaptan
    257. Ethyl methacrylate
    258. Ethyl nitrate
    259. Ethyl thiocyanate
    260. Ethylamine
    261. Ethylene
    262. Ethylene chlorohydrine
    263. Ethylene dibromide
    264. Ethylene diamine
    265. Ethylene diamine hydrochloride
    266. Ethylene flourohydrine
    267. Ethylene glycol
    268. Ethylene glycol dinitrate
    269. Ethylene oxide
    270. Ethylenimine
    271. Ethylene di chloride
    272. Femamiphos
    273. Fernitrothion
    274. Fensulphothion
    275. Pluemetil
    276. Fluorine
    277. Fluoro 2-hydroxy butyric acid amid salt ester
    278. Fluoroacetamide
    279. Fluoroacetic acid amide salts and esters
    280. Fluoroacetylchloride
    281 Fluorobutyric acid amide salt esters
    292. Fluorocrotonic acid amides salts esters
    293. Fluorouracil
    294. Fonofos
    295. Formaldehyde
    286. Formetanate hydrochloride
    287. Formic acid
    289. Formoparanate
    289. Formothion
    290. Fosthlotan
    291. Fuberidazole
    292. Furan
    293. GAlium Trichloride
    294. Glyconitrile (Hydroxyacetonitrile)
    295. Guanyt-4-nitrosaminoguynyl- 1-tetrazene
    296. Heptachlor
    298. Hexachlorobenzene
    299. Hexachlorocyclohexan (Lindane)
    300. Hexachlorocyclopentadiene
    301. Hexachlorodibenzo-p-dioxin
    302. Hexachloronapthalene
    303. Hexafluoropropanone sesquihydrate
    304. Hexamethyl phosphoroamide
    305. Hexamethylene diamine N N dibutyl
    306. Hexane
    307. Hexanitrostilbene 2 2 4 4 6 6
    308. Hexene
    309. Hydrogen selenide
    310. Hydrogen sulphide
    311. Hydrazipe
    312. Hydrazine nitrate
    313. Hydrochloric acid (Gas)
    314. Hydrogen
    315. Hydrogen bromide
    316. Hydrogen cyanide
    317. Hydrogen fluoride
    318. Hydrogen peroxide
    319. Hydroquinone
    320. Indene
    321. Indium powder
    322. Indomethacin
    323. Iodine
    324. Iridium tetrachloride
    325. Ironpentacarbonyl
    326, Iso benzan
    327. Isoamyl alcohol
    328. Isobutyl alcohol
    329. Isobutyro nitrile
    330. Isocyanic acid 3 4-dichlorophenyl ester
    331. Isodrin
    331. Isofluorophosphate
    333. Isophorone diisocyanate
    334. Isopropyl alcohol
    335. Isopropyl chlorocarbonate
    336. Isopropyl formate
    337. Isopropyl methyl pyrazolyl dimethyl carbamate
    338. Juglone (5-Hydroxy Napthalene- 1, 4 dione)
    339. Ketene
    340. Lactonitrile
    341. Lead arsenite
    342. Lead at high temp (molten)
    343. Lead azide
    344. Lead styphanat
    e 345. Leptophos
    346. Lenisite
    347. Liquified petroleum gas
    348. Lithium hydride
    349. N-Dinitrobenzene
    350. Magnesium powder or ribbon
    351. Malathion
    352, Maleic anhydride
    353. Malononitrile
    354. Manganese Tricarbonyl cyclopentadiene
    355. Mechlor ethamine
    356. Mephospholan
    357. Mercuric chloride
    358. Mercuric oxide
    359. Mercury acetate
    360. Mercury fulminate
    361. Mercury methyl chloride
    362. Mesitylene
    363. Methaacrolein diacetate
    364. Methacrylic anhydride
    365. Methacrylonitrile
    366. Methacryloyl oxyethyl isocyanate
    367. Methanidophos
    368. Methane
    369. Methanesulphonyl fluoride
    370. Methidathion
    371. Methiocarb
    372. Methonyl
    373. Methoxy ethanol (2-methyl cellosolve)
    374. Methoxyethyl mercuric acetate
    375. Methyacrylol chloride
    376. Methyl 2-chloroacrylate
    377. Methyl alcohol
    378. Methyl amine
    379. Methyl bromide (Bromomethane)
    380. Methyl chloride
    381. Methyl chloroform
    382. Methyl chloroformate
    383. Methyl cyclohexene
    384. Methyl disulphide
    385. Methyl ethyl ketone peroxide (Conc. 60%)
    386. Methyl formate
    387. Methyl hydrazine
    388. Methyl isobutyl ketone
    389. Methyl isocyanate
    390. Methyl isothiocyanate
    391. Methyl mercuric dicyanamide
    392. Methyl Mercaptan
    393. Methyl Methacrylate
    394. Methyl phencapton
    395. Methyl phosphonic dichloride
    396. Methyl thiocyanate
    397. Methyl trichlorosilane
    398. Methyl vinyl ketone
    399. Methylene bis (2-chloroaniline)
    400. Methylene chloride
    401. Methylenebis-4, 4(2-chloroaniline)
    402. Metolcarb
    403. Mevinphos
    404. Mezacarbate
    405. Mitomycin C
    406. Molybdenum powder
    407. Monocrotophos
    408. Morpholine
    409. Muscinol
    410. Mustard gas
    411. N-Butyl acetate
    412. N-Butyl alcohol
    413. N-Hexane
    414. N-Methyl-N, 2, 4, 6-Tetranitroaniline
    415. Naphtha
    416. Naphtha solvent
    417. Naphthalene
    418. Naphthyl amine
    419. Nickel carbonyl/nickel tetracarbonyl
    420. Nickel powder
    421. Nicotine
    422. Nicotine sulphate
    423. Nitric acid
    424. Nitric oxide
    425. Nitrobenzene
    426. Nitrocellulose (dry)
    427. Nitrochlorobenzene
    428. Nitrocycfohexane
    429. N itrogen
    430. Nitrogen dioxide
    431. Nitrogen oxide
    432. Nitrogen trifluouide
    433. Nitroglycerine
    434. Nitropropane-1
    435. Nitropropane-2
    436. Nitroso dimethyl amine
    437. Nonane
    438. Norbormide
    439. O-Cresol
    440. O-Nitro Toluene
    441. O-Toludine
    442. O-Xylene
    443. O/P Nitroaniline
    444. Oleurn
    445. OO Diethyl s ethyl suph. methyl ph
    446. OO Diethyl s propythio methyl phosdithioate
    447. OO Diethyl s thylsulphinylmethylphosphorothioate
    448. OO Diethyl s ethylsulphonvimethylphosphorothioate
    449. OO Diethyl s ethylthiomethylphosphorothioate
    450. Organo rhodium complex
    451. Orotic acid
    452. Osmium tetroxide
    453. Oxabain
    454. Oxamyl
    455. Oxetane, 3, 3,-bis(chloromethyl)
    456. Oxidiphenoxarsine
    457. Oxy disuffoton
    458. Oxygen (liquid)
    459 Oxygen difluoride
    460. Ozone
    461. P-nitrophenol
    462. Paraffin
    463. Paraoxon (Diethyl 4 Nitrophenyphosphate)
    464. Paraquat
    465. Paraquat methosulphate
    466. Parathion
    467. Parathion methyl
    468. Paris green
    469. Penta borane
    470. Penta chloro ethane
    471. Penta chlorophenol
    472. Pentabromophenol
    473. Pentachloro naphthalene
    474. Pentadecyl-amine
    475. Pentaerythaiotol tetranitrate
    476. Pentane
    477. Pentanone
    478. Perchloric acid
    479. Perchloroethylene
    480. Peroxyacetic acid
    481. Phenol
    482. Phenol, 2, 2-thiobis (4, 6-Dichloro)
    483. Phenol, 2, 2-thiobis (4 chloro 6 methyl phenol)
    484. Phenol, 3-(1-methyl ethyl)-methylcarbamato
    485. Phenyl hydrazine hydrochloride
    486. Phenyl mercury acetate
    487. Phenyl silatrane
    488. Phenyl thiourea
    489. Phenylene P-diamine
    490. Phorate
    491. Phosazetin
    492. Phosfolan
    493. Phosgene
    494. Phosmet
    495. Phosphamidon
    496. Phosphine
    497. Phosphoric acid
    498. Phosphoric acid dimethyl (4-methl thio) phenyl
    499. Phosphorothioic acid dimethyl S(2-Bis) Ester
    500. Phosphorothioic acid methyl (ester)
    501. Phosphorothioic acid, 00 Dimethyl S-(2-methyl)
    502. Phosphorothioic, methyl-ethyl ester
    503. Phosphorous
    504. Phosphorous oxychloride
    505. Phosphorous pentaoxide
    506. Phosphorous trichloride
    507. Phosphorous penta chloride
    508. Phthalic anhydride
    509. Phylioquinone
    510. Physostignine
    511. Physostignine salicylate (1:1)
    512. Picric acid (2,4,6-trinitrophenol)
    513. Picrotoxin
    514. Piperdine
    515. Piprotal
    516. Pirinifos-ethyl
    517. Platinous chloride
    518. Platitnim tetrachloride
    519. Pottasium arserute
    520. Potassium chlorate
    521. Potassium cyanide
    522. Potassium hydroxide
    523. Potassium nitride
    524. Potassium nitrite
    525. Potassium peroxide
    526. Potassium silver cyanide
    527. Powdered metals and mixtures
    528. Promecarb
    529. Promurit
    530. Propanesultone
    531. Propargyl alcohol
    532. Propargyl bromide
    533. Propen-2-chloro-1,3-diou diacetate
    534. Propiolactone bela
    535. Propionitrile
    536. Propionitrile, 3-chloro
    537. Propiophenone, 4-amino
    538. Propyl chloroformate
    539. Propylene dichloride
    540. Propylene gglycol, allylether
    541. Propylene imine
    542. Propylene oxide
    543. Prothoate
    544. Pseudosumene
    545. Pyrazoxon
    546. Pyrene
    547. Pyridine
    548. Pyridine, 2-methyl-3 -vinyl
    549. Pyridine, 4-nitro-I -oxide
    550. Pyridine, 4-nitro- I -oxide
    551. Pyriminil
    552. Quinaliphos
    553. Quinone
    554. Rhodium trichloride
    555. Salcomine
    556. Sarin
    557. Selenious acid
    558. Selenium Hexafluoride
    559. Selenium oxychloricle
    560. Semicarbazide hydrochloride
    561. Silane (4-amino butyl) diethoxy-meth
    562. Sodium
    563. Sodium anthra-quinone-1-sulphonaie
    564. Sodium arsenate
    565. Sodium arsenite
    566. Sodium azide
    567, Sodium cacodylate
    568. Sodium chlorate
    569. Sodium cyanide
    570. Sodium fluoro-acetate
    571. Sodium hydroxide
    572. Sodium pentachloro-phenate
    573. Sodium picramate
    574. Sodium selenate
    575. Sodium selenite
    576. Sodium sulphide
    577. Sodium tellorite
    578. Stannane acetoxy triphenyl
    579. Stibine (Antimony hydride)
    580. Strychnine
    581. Strychnine aulphate
    582. Styphinic acid (2.4.6-trinitroresorcinol)
    583. Styrene
    584. Sulphotec
    585. Sulphoxide 3-chloropropyl octyl
    586. Sulphur dichloride
    587. Sulphur dioxide
    588. Sulphur monochloride
    589. Sulphur tetrafluoride
    590. Sulphur trioxide
    591. Sulphuric acid
    592. Tellurium (Powder)
    593. Tellurium hexafluoride
    594, TEPP (Tetraethyl pyrophosphate)
    595. Terbufos
    596. Tert-Butyl alcohol
    597. Tert-Butyl peroxy carbonate
    598. Tert-Butyl peroxy isopropyl
    599. Tert-Butyl peroxyacetate (Conc>=70%)
    600. Tert-Butyl peroxypivalate(Conc>=77%)
    601. Tert-Butyperoxyiso-butyrate
    602. Terta hydrofuran
    60-3. Tetra methyl lead
    604. Tetra nitromethane
    605. Tetra-chlorodibenzo-p-dioxin, 1,2,3,7,8,(TCDD)
    606. Tetraethyl lead
    607. Tetrafluoriethyne
    608. Tetramethylene disulphotetramine
    609. Thallic oxide
    610. Thallium carbonate
    611. Thallium sulphate
    612. Thallous chloride
    613. Thallous malonate
    614. Thallous sulphate
    615. Thiocarbazide
    616. Thiocynarnicacid, 2-(Benzothiazolyethio) methyl
    617. Thiofamox
    618. Thiometon.
    619. Thionazin
    620. Thionyl chloride
    621. Thioplienol
    622. Thiosenlicarbazide
    623. Thiourea (2-chloro-phenyl)
    624. Thiourea (2-methyl phenyl)
    625. Tirpate (2.4-diinetlivi-1,3-di-thiolane)
    626. Titanium powder
    627. Titanium tetra-chloride
    628. Toluene
    629, Toluene 2.4-di isocyanate
    630. Toluene 2,6-di isocyanate
    631. Trans-1,4-di chloro-butene
    632. Tri nitro anisole
    633. Tri (Cyclohexyl) methylstannyl 1,2,4 triazole
    634. Tri (Cyclohexyl) stannyl- I H- 1,2,3-triazole
    635. Triaminotrinitrobenzene
    636. Triamphos
    637. Triazophos
    638. Tribromophenol 2,4,6
    639. Trichloro napthalene
    640. Trichloro chloromethyl silane
    641. Trichloroacetyl chloride
    642. Trichlorodichlorophenylsilane
    643. Trichloroethyl silane
    644. Tricbloroethylene
    645. Trichloromethane sulphenyl chloride
    646. Trichloronate
    647. Trichlorophenol 2, 3, 6
    648. Trichlorophenol 2, 4, 5
    649. Trichlorophenyl silane
    650. Trichlorophon
    651. Triethoxy silane
    652. Triethylamine
    653. Triethylene melamine
    654. Trimethyl chlorosilane
    655. Trimethyl propane phosphite
    656. Trimethyl tin chloride
    657. Trinitro aniline
    658. Trinitro benzene
    659. Trinitro benzoic acid
    660. Trinitro phenetole
    661. Trinitro-m-cresol
    662. Trinitrotoluene
    663. Tri orthocresyl phosphate
    664. Triphenyl tin chloride
    665. Tris (2-chloroethyl) amine
    666. Turpentine
    667. Uranium and its compounds
    668. Valinomycin
    669. Vanadium pentaoxide
    670. Vinyl acetate mononer
    671. Vinyl bromide
    672. Vinyl chloride
    673. Vinyl cyclohexane dioxide
    674. Vinyl fluoride
    675. Vinyl norbornene
    676. Vinyl toluene
    677. Vinyledene chloride
    678. Warfarin
    679. Warfarin sodium
    780. Xylene dichloride
    681. Xylidine
    682. Zinc dichloropentanitrile
    683. Zinc phosphate
    684. Zirconium & compounds