ZAT WARNA BELERANG (SULPHUR) SIFAT PENTING WARNA SPESIFIK HITAM TIDAK LARUT DLM AIR MURAH, MUDAH LARUT DLM Na2S + Na2CO3 PROSES STANDING BATH SUBSTANTIVITAS RENDAH TIDAK TAHAN KLOR FASTNESS BAIK Na2S + 4H2O Na2SO4 + 8 Hn Na2CO3 + 2H2O 2 NaOH + H2CO3 D - S - S - D + Hn D - S - SH D - S - SH + NaOH D - S - S - ONa + H2O D - S - O Na + H2O D - S - SH D - S - SH + On D - S - S - D

FAKTOR YANG BERPENGARUH ELEKTROLIT DAYA SERAP RENDAH, TERSERAP 50-60% MEKSI DI TAMBAH ELEKTROLIT. OLEH KARENA ITU DPT DIPAKAI DG METODA STANDING BATH TEMPERATUR PENYERAPAN DPT DITINGKATKAN DENGAN PENGGUNAAN TEMP.MENDIDIH LIQUOR RATIO PADA LR YG RENDAH PENYERAPAN AKAN BERTAMBAH BAIK SEHINGGA WARNA LEBIH TUA PADA WAKTU PENCELUPAN SERINGKALI TIMBUL BELERANG PD PERMUKAAN LARUTAN YG DPT MENEMPEL PADA PERMUKAAN BAHAN. JIKA PENCUCIANNYA KURANG SEMPURNA MENYEBABKAN PEGANGAN MENJADI KASAR. PADA PENYIMPANAN DI TEMPAT YG LEMBAB DPT MENYEBABKAN PENURUNAN KEKUATAN KARENA TERBENTUKNYA ASAM SULFAT

2 S + 2 O2 2 SO3 SO3 + H2 O H2 SO4 UNTUK MENCEGAHNYA DILAKUKAN PENCUCIAN DENGAN NATRIUM SULFIT Na2SO3 + S Na2S2O3 PENCELUPAN DENGAN ZAT WARNA BELERANG CENDERUNG MEMBENTUK EFEK “ BRONZING “ PENCELUPAN YANG TERLALU TUA DAPAT DIHILANGKAN DENGAN PENCUCIAN DLM LARUTAN NATRIUM SULFIDA TEMPERATUR 40 OC PADA WAKTU PENCELUPAN BERLANGSUNG KENA MATAHARI KEKURANGAN NATRIUM SULFIDA DALAM PENCELUPAN KESALAHAN PEMBUANGAN LARUTAN PENCELUPAN

Bridge Tie your opening directly to your key topic. Your energy and attitude set the tone and provide momentum for this meeting

TIP Key Topic Define the topic/problem/opportunity. State the reason for importance. Invite comments by audience. Encourage participation. Record and display key comments on key ideas. TIP Questions by the facilitator capture attention and interest and lead to involvement and interaction.

TIP Goals and Problems Define the goals. Define the problems. Encourage participants to focus on the issues and assign priorities. TIP Support the opinions and experiences of others with positive comments and positive attitude.

Solutions and Opportunities Invite comments and ideas from the audience. Record and display their comments regarding action plans and solutions. Invite participants to prioritize options. TIP Recognize that diversity in a group is positive, adding strength and substance.

Action Plan Describe the following (where additional information is needed assign responsibility to the logical person) Action steps. Materials needed. Training needed. Schedules. Costs.

Close your presentation to make a favorable, lasting impression Insure understanding. Describe first steps. Get commitment. TIP Close your presentation to make a favorable, lasting impression