| 1902 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1500 | A New Dictionary of Kanji Usage |
| 3191 | Classic Nelson (Andrew Nelson) |
| 1596 | Essential Kanji (P.G. O’Neill) |
| 1571 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1856 | Kanji and Kana (Spahn and Hadamitzky) |
| 2012 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1551 | Kanji in Context (Nishiguchi and Kono) |
| 1405 | Kodansha Compact Kanji Guide |
| 1519 | Kodansha Kanji Dictionary (Jack Halpern) |
| 803 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1096 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 770 | Les Kanjis dans la tete (Yves Maniette) |
| 24229 | Morohashi |
| 1184 | New Japanese English Character Dictionary (Jack Halpern) |
| 4006 | New Nelson (John Haig) |
| 763 | Remembering The Kanji (James Heisig) |
| 825 | Remembering The Kanji, 6th edition (James Heisig) |
| 1573 | Tuttle Kanji Cards (Alexander Kask) |
sulphur
- On:
- リュウ
Jōyō kanji, taught in junior high
JLPT level N1
1867 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 硫化 【リュウカ】 sulfuration, sulphuration
- 硫安 【リュウアン】 ammonium sulfate
- 脱硫 【ダツリュウ】 desulfurization, desulphurisation, desulphurization
- 加硫 【カリュウ】 vulcanizing (rubber)
Readings
- Korean:
- ryu
Spanish
- azufre abreviatura de ácido sulfúrico
Portuguese
- enxofre
French
- soufre
| 3357 | 2001 Kanji |
| 5a7.3 | The Kanji Dictionary |
| 1-5-7 | SKIP code |
| 1061.3 | Four corner code |
| 1-46-18 | JIS X 0208-1997 kuten code |
| 786b | Unicode hex code |
Jōyō kanji, taught in grade 5
JLPT level N1
1218 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 酸 【サン】 acid, sourness, sour taste
- 酸化 【サンカ】 oxidation, oxidization
- 炭酸 【タンサン】 carbonic acid, carbonated water, carbonated drink, baking soda, sodium carbonate
- アミノ酸 【アミノサン】 amino acid
Kun reading compounds
- 酸い 【すい】 sour, acid
- 酸葉 【すいば】 sorrel (Rumex acetosa), Common sorrel, garden sorrel, spinach dock
Readings
- Korean:
- san
Spanish
- ácido
- agrio
Portuguese
- ácido
- amargo
- azedo
- picante
French
- acide
- aigre
- amer
- sur (goût)
| 618 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 715 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 689 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1027 | A New Dictionary of Kanji Usage |
| 4789 | Classic Nelson (Andrew Nelson) |
| 819 | Essential Kanji (P.G. O’Neill) |
| 1838 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 516 | Kanji and Kana (Spahn and Hadamitzky) |
| 525 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1420 | Kanji in Context (Nishiguchi and Kono) |
| 1797 | Kodansha Compact Kanji Guide |
| 1968 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1049 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1415 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1449 | Les Kanjis dans la tete (Yves Maniette) |
| 39871 | Morohashi |
| 1563 | New Japanese English Character Dictionary (Jack Halpern) |
| 6177 | New Nelson (John Haig) |
| 1437 | Remembering The Kanji (James Heisig) |
| 1545 | Remembering The Kanji, 6th edition (James Heisig) |
| 791 | Tuttle Kanji Cards (Alexander Kask) |
| 3267 | 2001 Kanji |
| 7e7.2 | The Kanji Dictionary |
| 1-7-7 | SKIP code |
| 1364.7 | Four corner code |
| 1-27-32 | JIS X 0208-1997 kuten code |
| 9178 | Unicode hex code |
Jōyō kanji, taught in grade 2
JLPT level N4
559 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 紙 【シ】 newspaper
- 紙上 【シジョウ】 on paper, in the newspapers, in a letter
- 原稿用紙 【ゲンコウヨウシ】 Japanese writing paper (lined with a square grid, one square per character), manuscript paper
- 製紙 【セイシ】 papermaking, paper manufacture
Kun reading compounds
- 紙 【かみ】 paper
- 紙芝居 【かみしばい】 kamishibai, storytelling with pictures, form of Japanese street theater and storytelling (popular from the 1930s to the 1950s)
- インディア紙 【インディアかみ】 India paper
- 頸上 【くびかみ】 neckband, round upright collar (on some traditional Japanese clothing)
Readings
- Korean:
- ji
Spanish
- papel
- periódico
Portuguese
- Papel
French
- papier
| 85 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 148 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 132 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 501 | A New Dictionary of Kanji Usage |
| 3510 | Classic Nelson (Andrew Nelson) |
| 362 | Essential Kanji (P.G. O’Neill) |
| 236 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1953 | Japanese Names (P.G. O’Neill) |
| 2.2 | Japanese for Busy People |
| 180 | Kanji and Kana (Spahn and Hadamitzky) |
| 180 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 243 | Kanji in Context (Nishiguchi and Kono) |
| 1517 | Kodansha Compact Kanji Guide |
| 1654 | Kodansha Kanji Dictionary (Jack Halpern) |
| 879 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1197 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1846 | Les Kanjis dans la tete (Yves Maniette) |
| 27293 | Morohashi |
| 1302 | New Japanese English Character Dictionary (Jack Halpern) |
| 4455 | New Nelson (John Haig) |
| 1829 | Remembering The Kanji (James Heisig) |
| 1971 | Remembering The Kanji, 6th edition (James Heisig) |
| 456 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 194 | Tuttle Kanji Cards (Alexander Kask) |
| 2756 | 2001 Kanji |
| 6a4.4 | The Kanji Dictionary |
| 1-6-4 | SKIP code |
| 2294.0 | Four corner code |
| 1-27-70 | JIS X 0208-1997 kuten code |
| 7d19 | Unicode hex code |